Finding the Fourth Proportional to 12,499.38, 18,754.24 and 5,475.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.38 : 18,754.24 = 5,475.77 : x
2. Step 2: Convert to fraction form
   12,499.38/18,754.24 = 5,475.77/x
3. Step 3: Cross multiply
   12,499.38x = 18,754.24 × 5,475.77
4. Step 4: Simplify right side
   12,499.38x = 102,693,810.99
5. Step 5: Solve for x
   x = 102,693,810.99/12,499.38
6. Step 6: Final answer
   x = 8,215.92