Finding the Fourth Proportional to 8,280.76, 12,426.54 and 7,613.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.76 : 12,426.54 = 7,613.32 : x
2. Step 2: Convert to fraction form
   8,280.76/12,426.54 = 7,613.32/x
3. Step 3: Cross multiply
   8,280.76x = 12,426.54 × 7,613.32
4. Step 4: Simplify right side
   8,280.76x = 94,607,225.51
5. Step 5: Solve for x
   x = 94,607,225.51/8,280.76
6. Step 6: Final answer
   x = 11,424.94