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Finding the Fourth Proportional to 12,587.28, 18,867.96 and 6,742.32

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Solution

The fourth proportional to 12,587.28, 18,867.96 and 6,742.32 is: 10,106.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.28 : 18,867.96 = 6,742.32 : x
  2. Step 2: Convert to fraction form
    12,587.28/18,867.96 = 6,742.32/x
  3. Step 3: Cross multiply
    12,587.28x = 18,867.96 × 6,742.32
  4. Step 4: Simplify right side
    12,587.28x = 127,213,824.07
  5. Step 5: Solve for x
    x = 127,213,824.07/12,587.28
  6. Step 6: Final answer
    x = 10,106.54

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