Finding the Fourth Proportional to 9,816.82, 13,559.01 and 7,160.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,816.82 : 13,559.01 = 7,160.02 : x
2. Step 2: Convert to fraction form
   9,816.82/13,559.01 = 7,160.02/x
3. Step 3: Cross multiply
   9,816.82x = 13,559.01 × 7,160.02
4. Step 4: Simplify right side
   9,816.82x = 97,082,782.78
5. Step 5: Solve for x
   x = 97,082,782.78/9,816.82
6. Step 6: Final answer
   x = 9,889.43