Finding the Fourth Proportional to 9,970.94, 13,761.90 and 5,724.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970.94 : 13,761.90 = 5,724.88 : x
2. Step 2: Convert to fraction form
   9,970.94/13,761.90 = 5,724.88/x
3. Step 3: Cross multiply
   9,970.94x = 13,761.90 × 5,724.88
4. Step 4: Simplify right side
   9,970.94x = 78,785,191.67
5. Step 5: Solve for x
   x = 78,785,191.67/9,970.94
6. Step 6: Final answer
   x = 7,901.48