Finding the Fourth Proportional to 39,713.61, 59,577.71 and 13,061.10

Step by Step Solution

1. Step 1: Write the proportion equation
   39,713.61 : 59,577.71 = 13,061.10 : x
2. Step 2: Convert to fraction form
   39,713.61/59,577.71 = 13,061.10/x
3. Step 3: Cross multiply
   39,713.61x = 59,577.71 × 13,061.10
4. Step 4: Simplify right side
   39,713.61x = 778,150,362.78
5. Step 5: Solve for x
   x = 778,150,362.78/39,713.61
6. Step 6: Final answer
   x = 19,594.05