Finding the Fourth Proportional to 12,004.38, 16,561.42 and 7,520.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,004.38 : 16,561.42 = 7,520.32 : x
2. Step 2: Convert to fraction form
   12,004.38/16,561.42 = 7,520.32/x
3. Step 3: Cross multiply
   12,004.38x = 16,561.42 × 7,520.32
4. Step 4: Simplify right side
   12,004.38x = 124,547,178.05
5. Step 5: Solve for x
   x = 124,547,178.05/12,004.38
6. Step 6: Final answer
   x = 10,375.14