Finding the Fourth Proportional to 12,443.31, 17,164.17 and 11,612.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.31 : 17,164.17 = 11,612.94 : x
2. Step 2: Convert to fraction form
   12,443.31/17,164.17 = 11,612.94/x
3. Step 3: Cross multiply
   12,443.31x = 17,164.17 × 11,612.94
4. Step 4: Simplify right side
   12,443.31x = 199,326,476.36
5. Step 5: Solve for x
   x = 199,326,476.36/12,443.31
6. Step 6: Final answer
   x = 16,018.77