Finding the Fourth Proportional to 8,270.28, 12,376.83 and 5,106.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,270.28 : 12,376.83 = 5,106.45 : x
2. Step 2: Convert to fraction form
   8,270.28/12,376.83 = 5,106.45/x
3. Step 3: Cross multiply
   8,270.28x = 12,376.83 × 5,106.45
4. Step 4: Simplify right side
   8,270.28x = 63,201,663.55
5. Step 5: Solve for x
   x = 63,201,663.55/8,270.28
6. Step 6: Final answer
   x = 7,642.02