Finding the Fourth Proportional to 8,742.42, 13,113.86 and 2,168.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,742.42 : 13,113.86 = 2,168.51 : x
2. Step 2: Convert to fraction form
   8,742.42/13,113.86 = 2,168.51/x
3. Step 3: Cross multiply
   8,742.42x = 13,113.86 × 2,168.51
4. Step 4: Simplify right side
   8,742.42x = 28,437,460.14
5. Step 5: Solve for x
   x = 28,437,460.14/8,742.42
6. Step 6: Final answer
   x = 3,252.81