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Finding the Fourth Proportional to 12,039.72, 18,055.96 and 4,643.64

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Solution

The fourth proportional to 12,039.72, 18,055.96 and 4,643.64 is: 6,964.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.72 : 18,055.96 = 4,643.64 : x
  2. Step 2: Convert to fraction form
    12,039.72/18,055.96 = 4,643.64/x
  3. Step 3: Cross multiply
    12,039.72x = 18,055.96 × 4,643.64
  4. Step 4: Simplify right side
    12,039.72x = 83,845,378.09
  5. Step 5: Solve for x
    x = 83,845,378.09/12,039.72
  6. Step 6: Final answer
    x = 6,964.06

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