Finding the Fourth Proportional to 8,061.68, 11,115.24 and 5,538.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,061.68 : 11,115.24 = 5,538.80 : x
2. Step 2: Convert to fraction form
   8,061.68/11,115.24 = 5,538.80/x
3. Step 3: Cross multiply
   8,061.68x = 11,115.24 × 5,538.80
4. Step 4: Simplify right side
   8,061.68x = 61,565,091.31
5. Step 5: Solve for x
   x = 61,565,091.31/8,061.68
6. Step 6: Final answer
   x = 7,636.76