Finding the Fourth Proportional to 17,388.08, 26,086.98 and 5,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,388.08 : 26,086.98 = 5,709.50 : x
2. Step 2: Convert to fraction form
   17,388.08/26,086.98 = 5,709.50/x
3. Step 3: Cross multiply
   17,388.08x = 26,086.98 × 5,709.50
4. Step 4: Simplify right side
   17,388.08x = 148,943,612.31
5. Step 5: Solve for x
   x = 148,943,612.31/17,388.08
6. Step 6: Final answer
   x = 8,565.85