Finding the Fourth Proportional to 10,881.25, 15,011.06 and 6,402.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,881.25 : 15,011.06 = 6,402.15 : x
2. Step 2: Convert to fraction form
   10,881.25/15,011.06 = 6,402.15/x
3. Step 3: Cross multiply
   10,881.25x = 15,011.06 × 6,402.15
4. Step 4: Simplify right side
   10,881.25x = 96,103,025.77
5. Step 5: Solve for x
   x = 96,103,025.77/10,881.25
6. Step 6: Final answer
   x = 8,831.99