Finding the Fourth Proportional to 9,807.56, 13,533.52 and 5,615.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,807.56 : 13,533.52 = 5,615.72 : x
2. Step 2: Convert to fraction form
   9,807.56/13,533.52 = 5,615.72/x
3. Step 3: Cross multiply
   9,807.56x = 13,533.52 × 5,615.72
4. Step 4: Simplify right side
   9,807.56x = 76,000,458.93
5. Step 5: Solve for x
   x = 76,000,458.93/9,807.56
6. Step 6: Final answer
   x = 7,749.17