Finding the Fourth Proportional to 9,217.90, 12,720.71 and 5,026.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,217.90 : 12,720.71 = 5,026.15 : x
2. Step 2: Convert to fraction form
   9,217.90/12,720.71 = 5,026.15/x
3. Step 3: Cross multiply
   9,217.90x = 12,720.71 × 5,026.15
4. Step 4: Simplify right side
   9,217.90x = 63,936,196.57
5. Step 5: Solve for x
   x = 63,936,196.57/9,217.90
6. Step 6: Final answer
   x = 6,936.09