Finding the Fourth Proportional to 11,943.39, 17,915.06 and 3,178.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,943.39 : 17,915.06 = 3,178.31 : x
2. Step 2: Convert to fraction form
   11,943.39/17,915.06 = 3,178.31/x
3. Step 3: Cross multiply
   11,943.39x = 17,915.06 × 3,178.31
4. Step 4: Simplify right side
   11,943.39x = 56,939,532.72
5. Step 5: Solve for x
   x = 56,939,532.72/11,943.39
6. Step 6: Final answer
   x = 4,767.45