Finding the Fourth Proportional to 12,892.79, 17,788.73 and 7,586.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.79 : 17,788.73 = 7,586.61 : x
2. Step 2: Convert to fraction form
   12,892.79/17,788.73 = 7,586.61/x
3. Step 3: Cross multiply
   12,892.79x = 17,788.73 × 7,586.61
4. Step 4: Simplify right side
   12,892.79x = 134,956,118.97
5. Step 5: Solve for x
   x = 134,956,118.97/12,892.79
6. Step 6: Final answer
   x = 10,467.57