Finding the Fourth Proportional to 9,807.81, 13,533.24 and 5,615.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,807.81 : 13,533.24 = 5,615.25 : x
2. Step 2: Convert to fraction form
   9,807.81/13,533.24 = 5,615.25/x
3. Step 3: Cross multiply
   9,807.81x = 13,533.24 × 5,615.25
4. Step 4: Simplify right side
   9,807.81x = 75,992,525.91
5. Step 5: Solve for x
   x = 75,992,525.91/9,807.81
6. Step 6: Final answer
   x = 7,748.16