Finding the Fourth Proportional to 6,288.96, 9,432.72 and 2,128.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,288.96 : 9,432.72 = 2,128.98 : x
2. Step 2: Convert to fraction form
   6,288.96/9,432.72 = 2,128.98/x
3. Step 3: Cross multiply
   6,288.96x = 9,432.72 × 2,128.98
4. Step 4: Simplify right side
   6,288.96x = 20,082,072.23
5. Step 5: Solve for x
   x = 20,082,072.23/6,288.96
6. Step 6: Final answer
   x = 3,193.23