Finding the Fourth Proportional to 10,752.32, 16,123.30 and 8,406.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,752.32 : 16,123.30 = 8,406.38 : x
2. Step 2: Convert to fraction form
   10,752.32/16,123.30 = 8,406.38/x
3. Step 3: Cross multiply
   10,752.32x = 16,123.30 × 8,406.38
4. Step 4: Simplify right side
   10,752.32x = 135,538,586.65
5. Step 5: Solve for x
   x = 135,538,586.65/10,752.32
6. Step 6: Final answer
   x = 12,605.52