Finding the Fourth Proportional to 8,997.17, 12,417.71 and 5,642.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,997.17 : 12,417.71 = 5,642.82 : x
2. Step 2: Convert to fraction form
   8,997.17/12,417.71 = 5,642.82/x
3. Step 3: Cross multiply
   8,997.17x = 12,417.71 × 5,642.82
4. Step 4: Simplify right side
   8,997.17x = 70,070,874.13
5. Step 5: Solve for x
   x = 70,070,874.13/8,997.17
6. Step 6: Final answer
   x = 7,788.11