Finding the Fourth Proportional to 8,700.17, 12,002.24 and 5,162.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,700.17 : 12,002.24 = 5,162.09 : x
2. Step 2: Convert to fraction form
   8,700.17/12,002.24 = 5,162.09/x
3. Step 3: Cross multiply
   8,700.17x = 12,002.24 × 5,162.09
4. Step 4: Simplify right side
   8,700.17x = 61,956,595.98
5. Step 5: Solve for x
   x = 61,956,595.98/8,700.17
6. Step 6: Final answer
   x = 7,121.31