Finding the Fourth Proportional to 9,307.17, 12,843.36 and 5,115.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,307.17 : 12,843.36 = 5,115.42 : x
2. Step 2: Convert to fraction form
   9,307.17/12,843.36 = 5,115.42/x
3. Step 3: Cross multiply
   9,307.17x = 12,843.36 × 5,115.42
4. Step 4: Simplify right side
   9,307.17x = 65,699,180.61
5. Step 5: Solve for x
   x = 65,699,180.61/9,307.17
6. Step 6: Final answer
   x = 7,058.99