Finding the Fourth Proportional to 12,009.60, 16,580.88 and 7,535.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,009.60 : 16,580.88 = 7,535.52 : x
2. Step 2: Convert to fraction form
   12,009.60/16,580.88 = 7,535.52/x
3. Step 3: Cross multiply
   12,009.60x = 16,580.88 × 7,535.52
4. Step 4: Simplify right side
   12,009.60x = 124,945,552.86
5. Step 5: Solve for x
   x = 124,945,552.86/12,009.60
6. Step 6: Final answer
   x = 10,403.81