Finding the Fourth Proportional to 10,647.98, 15,971.34 and 4,071.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,647.98 : 15,971.34 = 4,071.18 : x
2. Step 2: Convert to fraction form
   10,647.98/15,971.34 = 4,071.18/x
3. Step 3: Cross multiply
   10,647.98x = 15,971.34 × 4,071.18
4. Step 4: Simplify right side
   10,647.98x = 65,022,199.98
5. Step 5: Solve for x
   x = 65,022,199.98/10,647.98
6. Step 6: Final answer
   x = 6,106.53