Finding the Fourth Proportional to 11,945.06, 17,920.56 and 4,153.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.06 : 17,920.56 = 4,153.94 : x
2. Step 2: Convert to fraction form
   11,945.06/17,920.56 = 4,153.94/x
3. Step 3: Cross multiply
   11,945.06x = 17,920.56 × 4,153.94
4. Step 4: Simplify right side
   11,945.06x = 74,440,931.01
5. Step 5: Solve for x
   x = 74,440,931.01/11,945.06
6. Step 6: Final answer
   x = 6,231.94