Finding the Fourth Proportional to 8,806.66, 12,151.29 and 5,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,806.66 : 12,151.29 = 5,078.50 : x
2. Step 2: Convert to fraction form
   8,806.66/12,151.29 = 5,078.50/x
3. Step 3: Cross multiply
   8,806.66x = 12,151.29 × 5,078.50
4. Step 4: Simplify right side
   8,806.66x = 61,710,326.27
5. Step 5: Solve for x
   x = 61,710,326.27/8,806.66
6. Step 6: Final answer
   x = 7,007.23