Finding the Fourth Proportional to 3,925.38, 5,416.98 and 2,156.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,925.38 : 5,416.98 = 2,156.98 : x
2. Step 2: Convert to fraction form
   3,925.38/5,416.98 = 2,156.98/x
3. Step 3: Cross multiply
   3,925.38x = 5,416.98 × 2,156.98
4. Step 4: Simplify right side
   3,925.38x = 11,684,317.52
5. Step 5: Solve for x
   x = 11,684,317.52/3,925.38
6. Step 6: Final answer
   x = 2,976.61