Finding the Fourth Proportional to 17,739.30, 26,505.98 and 13,436.38

Step by Step Solution

1. Step 1: Write the proportion equation
   17,739.30 : 26,505.98 = 13,436.38 : x
2. Step 2: Convert to fraction form
   17,739.30/26,505.98 = 13,436.38/x
3. Step 3: Cross multiply
   17,739.30x = 26,505.98 × 13,436.38
4. Step 4: Simplify right side
   17,739.30x = 356,144,511.47
5. Step 5: Solve for x
   x = 356,144,511.47/17,739.30
6. Step 6: Final answer
   x = 20,076.58