Finding the Fourth Proportional to 8,342.67, 12,499.80 and 7,291.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,342.67 : 12,499.80 = 7,291.10 : x
2. Step 2: Convert to fraction form
   8,342.67/12,499.80 = 7,291.10/x
3. Step 3: Cross multiply
   8,342.67x = 12,499.80 × 7,291.10
4. Step 4: Simplify right side
   8,342.67x = 91,137,229.28
5. Step 5: Solve for x
   x = 91,137,229.28/8,342.67
6. Step 6: Final answer
   x = 10,924.23