Finding the Fourth Proportional to 3,510.98, 5,291.52 and 3,510.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,510.98 : 5,291.52 = 3,510.98 : x
2. Step 2: Convert to fraction form
   3,510.98/5,291.52 = 3,510.98/x
3. Step 3: Cross multiply
   3,510.98x = 5,291.52 × 3,510.98
4. Step 4: Simplify right side
   3,510.98x = 18,578,420.89
5. Step 5: Solve for x
   x = 18,578,420.89/3,510.98
6. Step 6: Final answer
   x = 5,291.52