Finding the Fourth Proportional to 12,427,978.50, 17,151,142.43 and 6,921,353.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,427,978.50 : 17,151,142.43 = 6,921,353.32 : x
2. Step 2: Convert to fraction form
   12,427,978.50/17,151,142.43 = 6,921,353.32/x
3. Step 3: Cross multiply
   12,427,978.50x = 17,151,142.43 × 6,921,353.32
4. Step 4: Simplify right side
   12,427,978.50x = 118,709,116,599,673.38
5. Step 5: Solve for x
   x = 118,709,116,599,673.38/12,427,978.50
6. Step 6: Final answer
   x = 9,551,763.92