Finding the Fourth Proportional to 31,315.68, 46,973.43 and 7,942.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,315.68 : 46,973.43 = 7,942.05 : x
2. Step 2: Convert to fraction form
   31,315.68/46,973.43 = 7,942.05/x
3. Step 3: Cross multiply
   31,315.68x = 46,973.43 × 7,942.05
4. Step 4: Simplify right side
   31,315.68x = 373,065,329.73
5. Step 5: Solve for x
   x = 373,065,329.73/31,315.68
6. Step 6: Final answer
   x = 11,913.05