Finding the Fourth Proportional to 17,488.88, 26,256.17 and 10,386.08

Step by Step Solution

1. Step 1: Write the proportion equation
   17,488.88 : 26,256.17 = 10,386.08 : x
2. Step 2: Convert to fraction form
   17,488.88/26,256.17 = 10,386.08/x
3. Step 3: Cross multiply
   17,488.88x = 26,256.17 × 10,386.08
4. Step 4: Simplify right side
   17,488.88x = 272,698,498.90
5. Step 5: Solve for x
   x = 272,698,498.90/17,488.88
6. Step 6: Final answer
   x = 15,592.68