Finding the Fourth Proportional to 11,499.10, 15,864.60 and 7,522.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,499.10 : 15,864.60 = 7,522.48 : x
2. Step 2: Convert to fraction form
   11,499.10/15,864.60 = 7,522.48/x
3. Step 3: Cross multiply
   11,499.10x = 15,864.60 × 7,522.48
4. Step 4: Simplify right side
   11,499.10x = 119,341,136.21
5. Step 5: Solve for x
   x = 119,341,136.21/11,499.10
6. Step 6: Final answer
   x = 10,378.30