Finding the Fourth Proportional to 3,987.30, 5,502.50 and 2,219.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.30 : 5,502.50 = 2,219.02 : x
2. Step 2: Convert to fraction form
   3,987.30/5,502.50 = 2,219.02/x
3. Step 3: Cross multiply
   3,987.30x = 5,502.50 × 2,219.02
4. Step 4: Simplify right side
   3,987.30x = 12,210,141.02
5. Step 5: Solve for x
   x = 12,210,141.02/3,987.30
6. Step 6: Final answer
   x = 3,062.26