Finding the Fourth Proportional to 9,893.28, 13,652.72 and 5,417.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,893.28 : 13,652.72 = 5,417.31 : x
2. Step 2: Convert to fraction form
   9,893.28/13,652.72 = 5,417.31/x
3. Step 3: Cross multiply
   9,893.28x = 13,652.72 × 5,417.31
4. Step 4: Simplify right side
   9,893.28x = 73,961,016.58
5. Step 5: Solve for x
   x = 73,961,016.58/9,893.28
6. Step 6: Final answer
   x = 7,475.88