Finding the Fourth Proportional to 13,469.10, 18,585.18 and 7,500.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,469.10 : 18,585.18 = 7,500.75 : x
2. Step 2: Convert to fraction form
   13,469.10/18,585.18 = 7,500.75/x
3. Step 3: Cross multiply
   13,469.10x = 18,585.18 × 7,500.75
4. Step 4: Simplify right side
   13,469.10x = 139,402,788.89
5. Step 5: Solve for x
   x = 139,402,788.89/13,469.10
6. Step 6: Final answer
   x = 10,349.82