Finding the Fourth Proportional to 31,293.92, 46,947.83 and 9,109.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,293.92 : 46,947.83 = 9,109.05 : x
2. Step 2: Convert to fraction form
   31,293.92/46,947.83 = 9,109.05/x
3. Step 3: Cross multiply
   31,293.92x = 46,947.83 × 9,109.05
4. Step 4: Simplify right side
   31,293.92x = 427,650,085.32
5. Step 5: Solve for x
   x = 427,650,085.32/31,293.92
6. Step 6: Final answer
   x = 13,665.60