Finding the Fourth Proportional to 6,561.18, 9,846.63 and 3,100.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,561.18 : 9,846.63 = 3,100.86 : x
2. Step 2: Convert to fraction form
   6,561.18/9,846.63 = 3,100.86/x
3. Step 3: Cross multiply
   6,561.18x = 9,846.63 × 3,100.86
4. Step 4: Simplify right side
   6,561.18x = 30,533,021.10
5. Step 5: Solve for x
   x = 30,533,021.10/6,561.18
6. Step 6: Final answer
   x = 4,653.59