Finding the Fourth Proportional to 39,248.50, 58,864.50 and 12,947.08

Step by Step Solution

1. Step 1: Write the proportion equation
   39,248.50 : 58,864.50 = 12,947.08 : x
2. Step 2: Convert to fraction form
   39,248.50/58,864.50 = 12,947.08/x
3. Step 3: Cross multiply
   39,248.50x = 58,864.50 × 12,947.08
4. Step 4: Simplify right side
   39,248.50x = 762,123,243.50
5. Step 5: Solve for x
   x = 762,123,243.50/39,248.50
6. Step 6: Final answer
   x = 19,417.90