Finding the Fourth Proportional to 31,307.88, 46,964.55 and 7,934.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,307.88 : 46,964.55 = 7,934.31 : x
2. Step 2: Convert to fraction form
   31,307.88/46,964.55 = 7,934.31/x
3. Step 3: Cross multiply
   31,307.88x = 46,964.55 × 7,934.31
4. Step 4: Simplify right side
   31,307.88x = 372,631,298.71
5. Step 5: Solve for x
   x = 372,631,298.71/31,307.88
6. Step 6: Final answer
   x = 11,902.16