Finding the Fourth Proportional to 12,499.21, 18,758.03 and 5,925.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.21 : 18,758.03 = 5,925.37 : x
2. Step 2: Convert to fraction form
   12,499.21/18,758.03 = 5,925.37/x
3. Step 3: Cross multiply
   12,499.21x = 18,758.03 × 5,925.37
4. Step 4: Simplify right side
   12,499.21x = 111,148,191.70
5. Step 5: Solve for x
   x = 111,148,191.70/12,499.21
6. Step 6: Final answer
   x = 8,892.42