Finding the Fourth Proportional to 11,912.25, 17,869.14 and 3,146.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,912.25 : 17,869.14 = 3,146.94 : x
2. Step 2: Convert to fraction form
   11,912.25/17,869.14 = 3,146.94/x
3. Step 3: Cross multiply
   11,912.25x = 17,869.14 × 3,146.94
4. Step 4: Simplify right side
   11,912.25x = 56,233,111.43
5. Step 5: Solve for x
   x = 56,233,111.43/11,912.25
6. Step 6: Final answer
   x = 4,720.61