Finding the Fourth Proportional to 10,402.15, 14,354.88 and 5,686.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,402.15 : 14,354.88 = 5,686.42 : x
2. Step 2: Convert to fraction form
   10,402.15/14,354.88 = 5,686.42/x
3. Step 3: Cross multiply
   10,402.15x = 14,354.88 × 5,686.42
4. Step 4: Simplify right side
   10,402.15x = 81,627,876.73
5. Step 5: Solve for x
   x = 81,627,876.73/10,402.15
6. Step 6: Final answer
   x = 7,847.21