Finding the Fourth Proportional to 9,783.52, 13,501.18 and 5,307.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,783.52 : 13,501.18 = 5,307.28 : x
2. Step 2: Convert to fraction form
   9,783.52/13,501.18 = 5,307.28/x
3. Step 3: Cross multiply
   9,783.52x = 13,501.18 × 5,307.28
4. Step 4: Simplify right side
   9,783.52x = 71,654,542.59
5. Step 5: Solve for x
   x = 71,654,542.59/9,783.52
6. Step 6: Final answer
   x = 7,324.00