Finding the Fourth Proportional to 12,503.61, 18,746.15 and 7,572.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,503.61 : 18,746.15 = 7,572.15 : x
2. Step 2: Convert to fraction form
   12,503.61/18,746.15 = 7,572.15/x
3. Step 3: Cross multiply
   12,503.61x = 18,746.15 × 7,572.15
4. Step 4: Simplify right side
   12,503.61x = 141,948,621.86
5. Step 5: Solve for x
   x = 141,948,621.86/12,503.61
6. Step 6: Final answer
   x = 11,352.61