Finding the Fourth Proportional to 3,616.18, 5,428.59 and 2,156.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,616.18 : 5,428.59 = 2,156.02 : x
2. Step 2: Convert to fraction form
   3,616.18/5,428.59 = 2,156.02/x
3. Step 3: Cross multiply
   3,616.18x = 5,428.59 × 2,156.02
4. Step 4: Simplify right side
   3,616.18x = 11,704,148.61
5. Step 5: Solve for x
   x = 11,704,148.61/3,616.18
6. Step 6: Final answer
   x = 3,236.61