Finding the Fourth Proportional to 9,147.72, 13,682.01 and 5,390.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.72 : 13,682.01 = 5,390.58 : x
2. Step 2: Convert to fraction form
   9,147.72/13,682.01 = 5,390.58/x
3. Step 3: Cross multiply
   9,147.72x = 13,682.01 × 5,390.58
4. Step 4: Simplify right side
   9,147.72x = 73,753,969.47
5. Step 5: Solve for x
   x = 73,753,969.47/9,147.72
6. Step 6: Final answer
   x = 8,062.55