Finding the Fourth Proportional to 17,388.43, 26,082.18 and 4,909.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,388.43 : 26,082.18 = 4,909.31 : x
2. Step 2: Convert to fraction form
   17,388.43/26,082.18 = 4,909.31/x
3. Step 3: Cross multiply
   17,388.43x = 26,082.18 × 4,909.31
4. Step 4: Simplify right side
   17,388.43x = 128,045,507.10
5. Step 5: Solve for x
   x = 128,045,507.10/17,388.43
6. Step 6: Final answer
   x = 7,363.83