Finding the Fourth Proportional to 11,969.94, 17,963.12 and 4,178.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,969.94 : 17,963.12 = 4,178.75 : x
2. Step 2: Convert to fraction form
   11,969.94/17,963.12 = 4,178.75/x
3. Step 3: Cross multiply
   11,969.94x = 17,963.12 × 4,178.75
4. Step 4: Simplify right side
   11,969.94x = 75,063,411.71
5. Step 5: Solve for x
   x = 75,063,411.71/11,969.94
6. Step 6: Final answer
   x = 6,270.99