Finding the Fourth Proportional to 8,131.60, 10,943.02 and 8,131.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.60 : 10,943.02 = 8,131.60 : x
2. Step 2: Convert to fraction form
   8,131.60/10,943.02 = 8,131.60/x
3. Step 3: Cross multiply
   8,131.60x = 10,943.02 × 8,131.60
4. Step 4: Simplify right side
   8,131.60x = 88,984,261.43
5. Step 5: Solve for x
   x = 88,984,261.43/8,131.60
6. Step 6: Final answer
   x = 10,943.02