Finding the Fourth Proportional to 7,892.89, 10,889.64 and 5,240.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,892.89 : 10,889.64 = 5,240.82 : x
2. Step 2: Convert to fraction form
   7,892.89/10,889.64 = 5,240.82/x
3. Step 3: Cross multiply
   7,892.89x = 10,889.64 × 5,240.82
4. Step 4: Simplify right side
   7,892.89x = 57,070,643.10
5. Step 5: Solve for x
   x = 57,070,643.10/7,892.89
6. Step 6: Final answer
   x = 7,230.64