Finding the Fourth Proportional to 39,123.19, 58,688.06 and 12,472.96

Step by Step Solution

1. Step 1: Write the proportion equation
   39,123.19 : 58,688.06 = 12,472.96 : x
2. Step 2: Convert to fraction form
   39,123.19/58,688.06 = 12,472.96/x
3. Step 3: Cross multiply
   39,123.19x = 58,688.06 × 12,472.96
4. Step 4: Simplify right side
   39,123.19x = 732,013,824.86
5. Step 5: Solve for x
   x = 732,013,824.86/39,123.19
6. Step 6: Final answer
   x = 18,710.48