Finding the Fourth Proportional to 7,275.18, 10,892.43 and 3,931.45

Step by Step Solution

1. Step 1: Write the proportion equation
   7,275.18 : 10,892.43 = 3,931.45 : x
2. Step 2: Convert to fraction form
   7,275.18/10,892.43 = 3,931.45/x
3. Step 3: Cross multiply
   7,275.18x = 10,892.43 × 3,931.45
4. Step 4: Simplify right side
   7,275.18x = 42,823,043.92
5. Step 5: Solve for x
   x = 42,823,043.92/7,275.18
6. Step 6: Final answer
   x = 5,886.18