Finding the Fourth Proportional to 31,109.83, 46,684.10 and 12,641.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.83 : 46,684.10 = 12,641.83 : x
2. Step 2: Convert to fraction form
   31,109.83/46,684.10 = 12,641.83/x
3. Step 3: Cross multiply
   31,109.83x = 46,684.10 × 12,641.83
4. Step 4: Simplify right side
   31,109.83x = 590,172,455.90
5. Step 5: Solve for x
   x = 590,172,455.90/31,109.83
6. Step 6: Final answer
   x = 18,970.61