Finding the Fourth Proportional to 9,981.63, 13,774.50 and 5,789.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.63 : 13,774.50 = 5,789.88 : x
2. Step 2: Convert to fraction form
   9,981.63/13,774.50 = 5,789.88/x
3. Step 3: Cross multiply
   9,981.63x = 13,774.50 × 5,789.88
4. Step 4: Simplify right side
   9,981.63x = 79,752,702.06
5. Step 5: Solve for x
   x = 79,752,702.06/9,981.63
6. Step 6: Final answer
   x = 7,989.95