Finding the Fourth Proportional to 5,619.52, 8,429.58 and 2,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,619.52 : 8,429.58 = 2,156.50 : x
2. Step 2: Convert to fraction form
   5,619.52/8,429.58 = 2,156.50/x
3. Step 3: Cross multiply
   5,619.52x = 8,429.58 × 2,156.50
4. Step 4: Simplify right side
   5,619.52x = 18,178,389.27
5. Step 5: Solve for x
   x = 18,178,389.27/5,619.52
6. Step 6: Final answer
   x = 3,234.87