Finding the Fourth Proportional to 13,468.46, 18,585.15 and 7,499.90

Step by Step Solution

1. Step 1: Write the proportion equation
   13,468.46 : 18,585.15 = 7,499.90 : x
2. Step 2: Convert to fraction form
   13,468.46/18,585.15 = 7,499.90/x
3. Step 3: Cross multiply
   13,468.46x = 18,585.15 × 7,499.90
4. Step 4: Simplify right side
   13,468.46x = 139,386,766.49
5. Step 5: Solve for x
   x = 139,386,766.49/13,468.46
6. Step 6: Final answer
   x = 10,349.12