Finding the Fourth Proportional to 3,980.24, 5,492.72 and 2,387.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.24 : 5,492.72 = 2,387.18 : x
2. Step 2: Convert to fraction form
   3,980.24/5,492.72 = 2,387.18/x
3. Step 3: Cross multiply
   3,980.24x = 5,492.72 × 2,387.18
4. Step 4: Simplify right side
   3,980.24x = 13,112,111.33
5. Step 5: Solve for x
   x = 13,112,111.33/3,980.24
6. Step 6: Final answer
   x = 3,294.30