Finding the Fourth Proportional to 9,810.17, 13,538.36 and 5,561.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.17 : 13,538.36 = 5,561.18 : x
2. Step 2: Convert to fraction form
   9,810.17/13,538.36 = 5,561.18/x
3. Step 3: Cross multiply
   9,810.17x = 13,538.36 × 5,561.18
4. Step 4: Simplify right side
   9,810.17x = 75,289,256.86
5. Step 5: Solve for x
   x = 75,289,256.86/9,810.17
6. Step 6: Final answer
   x = 7,674.61