Finding the Fourth Proportional to 5,275.93, 7,914.78 and 2,157.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,275.93 : 7,914.78 = 2,157.61 : x
2. Step 2: Convert to fraction form
   5,275.93/7,914.78 = 2,157.61/x
3. Step 3: Cross multiply
   5,275.93x = 7,914.78 × 2,157.61
4. Step 4: Simplify right side
   5,275.93x = 17,076,997.69
5. Step 5: Solve for x
   x = 17,076,997.69/5,275.93
6. Step 6: Final answer
   x = 3,236.77