Finding the Fourth Proportional to 39,729, 59,594.70 and 10,147.38

Step by Step Solution

1. Step 1: Write the proportion equation
   39,729 : 59,594.70 = 10,147.38 : x
2. Step 2: Convert to fraction form
   39,729/59,594.70 = 10,147.38/x
3. Step 3: Cross multiply
   39,729x = 59,594.70 × 10,147.38
4. Step 4: Simplify right side
   39,729x = 604,730,066.89
5. Step 5: Solve for x
   x = 604,730,066.89/39,729
6. Step 6: Final answer
   x = 15,221.38