Finding the Fourth Proportional to 31,111.70, 46,669.97 and 11,389.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.70 : 46,669.97 = 11,389.82 : x
2. Step 2: Convert to fraction form
   31,111.70/46,669.97 = 11,389.82/x
3. Step 3: Cross multiply
   31,111.70x = 46,669.97 × 11,389.82
4. Step 4: Simplify right side
   31,111.70x = 531,562,352.83
5. Step 5: Solve for x
   x = 531,562,352.83/31,111.70
6. Step 6: Final answer
   x = 17,085.61