Finding the Fourth Proportional to 8,090.73, 12,116.95 and 5,160.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,090.73 : 12,116.95 = 5,160.15 : x
2. Step 2: Convert to fraction form
   8,090.73/12,116.95 = 5,160.15/x
3. Step 3: Cross multiply
   8,090.73x = 12,116.95 × 5,160.15
4. Step 4: Simplify right side
   8,090.73x = 62,525,279.54
5. Step 5: Solve for x
   x = 62,525,279.54/8,090.73
6. Step 6: Final answer
   x = 7,728.01