Finding the Fourth Proportional to 8,339.04, 12,476.71 and 7,291.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,339.04 : 12,476.71 = 7,291.30 : x
2. Step 2: Convert to fraction form
   8,339.04/12,476.71 = 7,291.30/x
3. Step 3: Cross multiply
   8,339.04x = 12,476.71 × 7,291.30
4. Step 4: Simplify right side
   8,339.04x = 90,971,435.62
5. Step 5: Solve for x
   x = 90,971,435.62/8,339.04
6. Step 6: Final answer
   x = 10,909.10