Finding the Fourth Proportional to 31,282.28, 46,919.10 and 7,907.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,282.28 : 46,919.10 = 7,907.30 : x
2. Step 2: Convert to fraction form
   31,282.28/46,919.10 = 7,907.30/x
3. Step 3: Cross multiply
   31,282.28x = 46,919.10 × 7,907.30
4. Step 4: Simplify right side
   31,282.28x = 371,003,399.43
5. Step 5: Solve for x
   x = 371,003,399.43/31,282.28
6. Step 6: Final answer
   x = 11,859.86