Finding the Fourth Proportional to 10,528.38, 14,526.52 and 7,131.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,528.38 : 14,526.52 = 7,131.64 : x
2. Step 2: Convert to fraction form
   10,528.38/14,526.52 = 7,131.64/x
3. Step 3: Cross multiply
   10,528.38x = 14,526.52 × 7,131.64
4. Step 4: Simplify right side
   10,528.38x = 103,597,911.09
5. Step 5: Solve for x
   x = 103,597,911.09/10,528.38
6. Step 6: Final answer
   x = 9,839.87