Finding the Fourth Proportional to 28,086.66, 42,132.51 and 7,310.34

Step by Step Solution

1. Step 1: Write the proportion equation
   28,086.66 : 42,132.51 = 7,310.34 : x
2. Step 2: Convert to fraction form
   28,086.66/42,132.51 = 7,310.34/x
3. Step 3: Cross multiply
   28,086.66x = 42,132.51 × 7,310.34
4. Step 4: Simplify right side
   28,086.66x = 308,002,973.15
5. Step 5: Solve for x
   x = 308,002,973.15/28,086.66
6. Step 6: Final answer
   x = 10,966.17