Finding the Fourth Proportional to 39,886.72, 59,837.20 and 13,234.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,886.72 : 59,837.20 = 13,234.31 : x
2. Step 2: Convert to fraction form
   39,886.72/59,837.20 = 13,234.31/x
3. Step 3: Cross multiply
   39,886.72x = 59,837.20 × 13,234.31
4. Step 4: Simplify right side
   39,886.72x = 791,904,083.46
5. Step 5: Solve for x
   x = 791,904,083.46/39,886.72
6. Step 6: Final answer
   x = 19,853.83