Finding the Fourth Proportional to 12,499.32, 17,256.24 and 12,003.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.32 : 17,256.24 = 12,003.60 : x
2. Step 2: Convert to fraction form
   12,499.32/17,256.24 = 12,003.60/x
3. Step 3: Cross multiply
   12,499.32x = 17,256.24 × 12,003.60
4. Step 4: Simplify right side
   12,499.32x = 207,137,002.46
5. Step 5: Solve for x
   x = 207,137,002.46/12,499.32
6. Step 6: Final answer
   x = 16,571.86