Finding the Fourth Proportional to 12,500.30, 18,750.72 and 4,179.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,500.30 : 18,750.72 = 4,179.98 : x
2. Step 2: Convert to fraction form
   12,500.30/18,750.72 = 4,179.98/x
3. Step 3: Cross multiply
   12,500.30x = 18,750.72 × 4,179.98
4. Step 4: Simplify right side
   12,500.30x = 78,377,634.59
5. Step 5: Solve for x
   x = 78,377,634.59/12,500.30
6. Step 6: Final answer
   x = 6,270.06