Finding the Fourth Proportional to 12,499.65, 17,256.71 and 9,330.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.65 : 17,256.71 = 9,330.41 : x
2. Step 2: Convert to fraction form
   12,499.65/17,256.71 = 9,330.41/x
3. Step 3: Cross multiply
   12,499.65x = 17,256.71 × 9,330.41
4. Step 4: Simplify right side
   12,499.65x = 161,012,246.02
5. Step 5: Solve for x
   x = 161,012,246.02/12,499.65
6. Step 6: Final answer
   x = 12,881.34