Finding the Fourth Proportional to 9,521.02, 13,139.04 and 5,541.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.02 : 13,139.04 = 5,541.09 : x
2. Step 2: Convert to fraction form
   9,521.02/13,139.04 = 5,541.09/x
3. Step 3: Cross multiply
   9,521.02x = 13,139.04 × 5,541.09
4. Step 4: Simplify right side
   9,521.02x = 72,804,603.15
5. Step 5: Solve for x
   x = 72,804,603.15/9,521.02
6. Step 6: Final answer
   x = 7,646.72