Finding the Fourth Proportional to 13,162.87, 18,165.90 and 7,499.35

Step by Step Solution

1. Step 1: Write the proportion equation
   13,162.87 : 18,165.90 = 7,499.35 : x
2. Step 2: Convert to fraction form
   13,162.87/18,165.90 = 7,499.35/x
3. Step 3: Cross multiply
   13,162.87x = 18,165.90 × 7,499.35
4. Step 4: Simplify right side
   13,162.87x = 136,232,442.17
5. Step 5: Solve for x
   x = 136,232,442.17/13,162.87
6. Step 6: Final answer
   x = 10,349.75