Finding the Fourth Proportional to 3,738.32, 5,158.56 and 2,166.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,738.32 : 5,158.56 = 2,166.52 : x
2. Step 2: Convert to fraction form
   3,738.32/5,158.56 = 2,166.52/x
3. Step 3: Cross multiply
   3,738.32x = 5,158.56 × 2,166.52
4. Step 4: Simplify right side
   3,738.32x = 11,176,123.41
5. Step 5: Solve for x
   x = 11,176,123.41/3,738.32
6. Step 6: Final answer
   x = 2,989.61