Finding the Fourth Proportional to 39,477.57, 59,227.89 and 13,200.76

Step by Step Solution

1. Step 1: Write the proportion equation
   39,477.57 : 59,227.89 = 13,200.76 : x
2. Step 2: Convert to fraction form
   39,477.57/59,227.89 = 13,200.76/x
3. Step 3: Cross multiply
   39,477.57x = 59,227.89 × 13,200.76
4. Step 4: Simplify right side
   39,477.57x = 781,853,161.20
5. Step 5: Solve for x
   x = 781,853,161.20/39,477.57
6. Step 6: Final answer
   x = 19,805.00