Finding the Fourth Proportional to 5,300.18, 7,951.57 and 2,661.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.18 : 7,951.57 = 2,661.15 : x
2. Step 2: Convert to fraction form
   5,300.18/7,951.57 = 2,661.15/x
3. Step 3: Cross multiply
   5,300.18x = 7,951.57 × 2,661.15
4. Step 4: Simplify right side
   5,300.18x = 21,160,343.67
5. Step 5: Solve for x
   x = 21,160,343.67/5,300.18
6. Step 6: Final answer
   x = 3,992.38