Finding the Fourth Proportional to 17,402.50, 26,105.80 and 13,047.64

Step by Step Solution

1. Step 1: Write the proportion equation
   17,402.50 : 26,105.80 = 13,047.64 : x
2. Step 2: Convert to fraction form
   17,402.50/26,105.80 = 13,047.64/x
3. Step 3: Cross multiply
   17,402.50x = 26,105.80 × 13,047.64
4. Step 4: Simplify right side
   17,402.50x = 340,619,080.31
5. Step 5: Solve for x
   x = 340,619,080.31/17,402.50
6. Step 6: Final answer
   x = 19,573.00