Finding the Fourth Proportional to 9,726.72, 13,422.42 and 5,477.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,726.72 : 13,422.42 = 5,477.82 : x
2. Step 2: Convert to fraction form
   9,726.72/13,422.42 = 5,477.82/x
3. Step 3: Cross multiply
   9,726.72x = 13,422.42 × 5,477.82
4. Step 4: Simplify right side
   9,726.72x = 73,525,600.72
5. Step 5: Solve for x
   x = 73,525,600.72/9,726.72
6. Step 6: Final answer
   x = 7,559.14