Finding the Fourth Proportional to 9,085.10, 12,538.09 and 5,548.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,085.10 : 12,538.09 = 5,548.97 : x
2. Step 2: Convert to fraction form
   9,085.10/12,538.09 = 5,548.97/x
3. Step 3: Cross multiply
   9,085.10x = 12,538.09 × 5,548.97
4. Step 4: Simplify right side
   9,085.10x = 69,573,523.55
5. Step 5: Solve for x
   x = 69,573,523.55/9,085.10
6. Step 6: Final answer
   x = 7,657.99