Finding the Fourth Proportional to 12,486.87, 17,234.82 and 7,184.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,486.87 : 17,234.82 = 7,184.79 : x
2. Step 2: Convert to fraction form
   12,486.87/17,234.82 = 7,184.79/x
3. Step 3: Cross multiply
   12,486.87x = 17,234.82 × 7,184.79
4. Step 4: Simplify right side
   12,486.87x = 123,828,562.39
5. Step 5: Solve for x
   x = 123,828,562.39/12,486.87
6. Step 6: Final answer
   x = 9,916.70