Finding the Fourth Proportional to 19,598.06, 29,414.78 and 13,257.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,598.06 : 29,414.78 = 13,257.61 : x
2. Step 2: Convert to fraction form
   19,598.06/29,414.78 = 13,257.61/x
3. Step 3: Cross multiply
   19,598.06x = 29,414.78 × 13,257.61
4. Step 4: Simplify right side
   19,598.06x = 389,969,681.48
5. Step 5: Solve for x
   x = 389,969,681.48/19,598.06
6. Step 6: Final answer
   x = 19,898.38