Finding the Fourth Proportional to 9,836.91, 13,574.45 and 5,360.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,836.91 : 13,574.45 = 5,360.65 : x
2. Step 2: Convert to fraction form
   9,836.91/13,574.45 = 5,360.65/x
3. Step 3: Cross multiply
   9,836.91x = 13,574.45 × 5,360.65
4. Step 4: Simplify right side
   9,836.91x = 72,767,854.86
5. Step 5: Solve for x
   x = 72,767,854.86/9,836.91
6. Step 6: Final answer
   x = 7,397.43