Finding the Fourth Proportional to 8,002.19, 12,003.50 and 2,158.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,002.19 : 12,003.50 = 2,158.79 : x
2. Step 2: Convert to fraction form
   8,002.19/12,003.50 = 2,158.79/x
3. Step 3: Cross multiply
   8,002.19x = 12,003.50 × 2,158.79
4. Step 4: Simplify right side
   8,002.19x = 25,912,981.14
5. Step 5: Solve for x
   x = 25,912,981.14/8,002.19
6. Step 6: Final answer
   x = 3,238.24