Finding the Fourth Proportional to 9,823.28, 13,557.30 and 5,631.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,823.28 : 13,557.30 = 5,631.52 : x
2. Step 2: Convert to fraction form
   9,823.28/13,557.30 = 5,631.52/x
3. Step 3: Cross multiply
   9,823.28x = 13,557.30 × 5,631.52
4. Step 4: Simplify right side
   9,823.28x = 76,348,206.10
5. Step 5: Solve for x
   x = 76,348,206.10/9,823.28
6. Step 6: Final answer
   x = 7,772.17