Finding the Fourth Proportional to 17,389.10, 26,085.69 and 5,538.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,389.10 : 26,085.69 = 5,538.72 : x
2. Step 2: Convert to fraction form
   17,389.10/26,085.69 = 5,538.72/x
3. Step 3: Cross multiply
   17,389.10x = 26,085.69 × 5,538.72
4. Step 4: Simplify right side
   17,389.10x = 144,481,332.92
5. Step 5: Solve for x
   x = 144,481,332.92/17,389.10
6. Step 6: Final answer
   x = 8,308.73