Finding the Fourth Proportional to 9,981.42, 13,769.91 and 5,787.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.42 : 13,769.91 = 5,787.24 : x
2. Step 2: Convert to fraction form
   9,981.42/13,769.91 = 5,787.24/x
3. Step 3: Cross multiply
   9,981.42x = 13,769.91 × 5,787.24
4. Step 4: Simplify right side
   9,981.42x = 79,689,773.95
5. Step 5: Solve for x
   x = 79,689,773.95/9,981.42
6. Step 6: Final answer
   x = 7,983.81