Finding the Fourth Proportional to 31,315.55, 46,972.71 and 7,941.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,315.55 : 46,972.71 = 7,941.38 : x
2. Step 2: Convert to fraction form
   31,315.55/46,972.71 = 7,941.38/x
3. Step 3: Cross multiply
   31,315.55x = 46,972.71 × 7,941.38
4. Step 4: Simplify right side
   31,315.55x = 373,027,904.88
5. Step 5: Solve for x
   x = 373,027,904.88/31,315.55
6. Step 6: Final answer
   x = 11,911.91