Finding the Fourth Proportional to 2,499.23, 3,447.09 and 2,215.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.23 : 3,447.09 = 2,215.98 : x
2. Step 2: Convert to fraction form
   2,499.23/3,447.09 = 2,215.98/x
3. Step 3: Cross multiply
   2,499.23x = 3,447.09 × 2,215.98
4. Step 4: Simplify right side
   2,499.23x = 7,638,682.50
5. Step 5: Solve for x
   x = 7,638,682.50/2,499.23
6. Step 6: Final answer
   x = 3,056.41