Finding the Fourth Proportional to 8,923.32, 12,315.90 and 5,148.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,923.32 : 12,315.90 = 5,148.92 : x
2. Step 2: Convert to fraction form
   8,923.32/12,315.90 = 5,148.92/x
3. Step 3: Cross multiply
   8,923.32x = 12,315.90 × 5,148.92
4. Step 4: Simplify right side
   8,923.32x = 63,413,583.83
5. Step 5: Solve for x
   x = 63,413,583.83/8,923.32
6. Step 6: Final answer
   x = 7,106.50