Finding the Fourth Proportional to 10,209.18, 14,087.96 and 5,672.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,209.18 : 14,087.96 = 5,672.10 : x
2. Step 2: Convert to fraction form
   10,209.18/14,087.96 = 5,672.10/x
3. Step 3: Cross multiply
   10,209.18x = 14,087.96 × 5,672.10
4. Step 4: Simplify right side
   10,209.18x = 79,908,317.92
5. Step 5: Solve for x
   x = 79,908,317.92/10,209.18
6. Step 6: Final answer
   x = 7,827.10