Finding the Fourth Proportional to 3,990.54, 5,510.42 and 2,501.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990.54 : 5,510.42 = 2,501.02 : x
2. Step 2: Convert to fraction form
   3,990.54/5,510.42 = 2,501.02/x
3. Step 3: Cross multiply
   3,990.54x = 5,510.42 × 2,501.02
4. Step 4: Simplify right side
   3,990.54x = 13,781,670.63
5. Step 5: Solve for x
   x = 13,781,670.63/3,990.54
6. Step 6: Final answer
   x = 3,453.59