Finding the Fourth Proportional to 9,974.59, 13,763.82 and 5,724.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,974.59 : 13,763.82 = 5,724.52 : x
2. Step 2: Convert to fraction form
   9,974.59/13,763.82 = 5,724.52/x
3. Step 3: Cross multiply
   9,974.59x = 13,763.82 × 5,724.52
4. Step 4: Simplify right side
   9,974.59x = 78,791,262.87
5. Step 5: Solve for x
   x = 78,791,262.87/9,974.59
6. Step 6: Final answer
   x = 7,899.20