Finding the Fourth Proportional to 10,008.86, 13,796.32 and 7,881.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,008.86 : 13,796.32 = 7,881.02 : x
2. Step 2: Convert to fraction form
   10,008.86/13,796.32 = 7,881.02/x
3. Step 3: Cross multiply
   10,008.86x = 13,796.32 × 7,881.02
4. Step 4: Simplify right side
   10,008.86x = 108,729,073.85
5. Step 5: Solve for x
   x = 108,729,073.85/10,008.86
6. Step 6: Final answer
   x = 10,863.28