Finding the Fourth Proportional to 9,910.08, 13,672.98 and 5,661

Step by Step Solution

1. Step 1: Write the proportion equation
   9,910.08 : 13,672.98 = 5,661 : x
2. Step 2: Convert to fraction form
   9,910.08/13,672.98 = 5,661/x
3. Step 3: Cross multiply
   9,910.08x = 13,672.98 × 5,661
4. Step 4: Simplify right side
   9,910.08x = 77,402,739.78
5. Step 5: Solve for x
   x = 77,402,739.78/9,910.08
6. Step 6: Final answer
   x = 7,810.51