Finding the Fourth Proportional to 8,928.23, 12,321.50 and 5,151.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,928.23 : 12,321.50 = 5,151.32 : x
2. Step 2: Convert to fraction form
   8,928.23/12,321.50 = 5,151.32/x
3. Step 3: Cross multiply
   8,928.23x = 12,321.50 × 5,151.32
4. Step 4: Simplify right side
   8,928.23x = 63,471,902.02
5. Step 5: Solve for x
   x = 63,471,902.02/8,928.23
6. Step 6: Final answer
   x = 7,109.13