Finding the Fourth Proportional to 9,988.82, 13,780.04 and 5,738.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988.82 : 13,780.04 = 5,738.82 : x
2. Step 2: Convert to fraction form
   9,988.82/13,780.04 = 5,738.82/x
3. Step 3: Cross multiply
   9,988.82x = 13,780.04 × 5,738.82
4. Step 4: Simplify right side
   9,988.82x = 79,081,169.15
5. Step 5: Solve for x
   x = 79,081,169.15/9,988.82
6. Step 6: Final answer
   x = 7,916.97