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Finding the Fourth Proportional to 12,866.31, 19,303.79 and 5,070.87

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Solution

The fourth proportional to 12,866.31, 19,303.79 and 5,070.87 is: 7,608.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.31 : 19,303.79 = 5,070.87 : x
  2. Step 2: Convert to fraction form
    12,866.31/19,303.79 = 5,070.87/x
  3. Step 3: Cross multiply
    12,866.31x = 19,303.79 × 5,070.87
  4. Step 4: Simplify right side
    12,866.31x = 97,886,984.24
  5. Step 5: Solve for x
    x = 97,886,984.24/12,866.31
  6. Step 6: Final answer
    x = 7,608.01

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