Finding the Fourth Proportional to 8,892.14, 12,271.40 and 5,309.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.14 : 12,271.40 = 5,309.18 : x
2. Step 2: Convert to fraction form
   8,892.14/12,271.40 = 5,309.18/x
3. Step 3: Cross multiply
   8,892.14x = 12,271.40 × 5,309.18
4. Step 4: Simplify right side
   8,892.14x = 65,151,071.45
5. Step 5: Solve for x
   x = 65,151,071.45/8,892.14
6. Step 6: Final answer
   x = 7,326.82