Finding the Fourth Proportional to 9,947.42, 13,722.82 and 5,961.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.42 : 13,722.82 = 5,961.61 : x
2. Step 2: Convert to fraction form
   9,947.42/13,722.82 = 5,961.61/x
3. Step 3: Cross multiply
   9,947.42x = 13,722.82 × 5,961.61
4. Step 4: Simplify right side
   9,947.42x = 81,810,051.73
5. Step 5: Solve for x
   x = 81,810,051.73/9,947.42
6. Step 6: Final answer
   x = 8,224.25