Finding the Fourth Proportional to 5,667.28, 8,499.60 and 2,156.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,667.28 : 8,499.60 = 2,156.56 : x
2. Step 2: Convert to fraction form
   5,667.28/8,499.60 = 2,156.56/x
3. Step 3: Cross multiply
   5,667.28x = 8,499.60 × 2,156.56
4. Step 4: Simplify right side
   5,667.28x = 18,329,897.38
5. Step 5: Solve for x
   x = 18,329,897.38/5,667.28
6. Step 6: Final answer
   x = 3,234.34