Finding the Fourth Proportional to 8,832.28, 12,189.60 and 5,106.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,832.28 : 12,189.60 = 5,106.28 : x
2. Step 2: Convert to fraction form
   8,832.28/12,189.60 = 5,106.28/x
3. Step 3: Cross multiply
   8,832.28x = 12,189.60 × 5,106.28
4. Step 4: Simplify right side
   8,832.28x = 62,243,510.69
5. Step 5: Solve for x
   x = 62,243,510.69/8,832.28
6. Step 6: Final answer
   x = 7,047.28