Finding the Fourth Proportional to 9,959.61, 13,743.72 and 5,710.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,959.61 : 13,743.72 = 5,710.46 : x
2. Step 2: Convert to fraction form
   9,959.61/13,743.72 = 5,710.46/x
3. Step 3: Cross multiply
   9,959.61x = 13,743.72 × 5,710.46
4. Step 4: Simplify right side
   9,959.61x = 78,482,997.67
5. Step 5: Solve for x
   x = 78,482,997.67/9,959.61
6. Step 6: Final answer
   x = 7,880.13