Finding the Fourth Proportional to 9,868.98, 13,618.96 and 5,392.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,868.98 : 13,618.96 = 5,392.74 : x
2. Step 2: Convert to fraction form
   9,868.98/13,618.96 = 5,392.74/x
3. Step 3: Cross multiply
   9,868.98x = 13,618.96 × 5,392.74
4. Step 4: Simplify right side
   9,868.98x = 73,443,510.35
5. Step 5: Solve for x
   x = 73,443,510.35/9,868.98
6. Step 6: Final answer
   x = 7,441.85