Finding the Fourth Proportional to 17,715.90, 26,576.72 and 5,237.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,715.90 : 26,576.72 = 5,237.18 : x
2. Step 2: Convert to fraction form
   17,715.90/26,576.72 = 5,237.18/x
3. Step 3: Cross multiply
   17,715.90x = 26,576.72 × 5,237.18
4. Step 4: Simplify right side
   17,715.90x = 139,187,066.45
5. Step 5: Solve for x
   x = 139,187,066.45/17,715.90
6. Step 6: Final answer
   x = 7,856.62