Finding the Fourth Proportional to 38,947.83, 58,426.08 and 12,297.61

Step by Step Solution

1. Step 1: Write the proportion equation
   38,947.83 : 58,426.08 = 12,297.61 : x
2. Step 2: Convert to fraction form
   38,947.83/58,426.08 = 12,297.61/x
3. Step 3: Cross multiply
   38,947.83x = 58,426.08 × 12,297.61
4. Step 4: Simplify right side
   38,947.83x = 718,501,145.67
5. Step 5: Solve for x
   x = 718,501,145.67/38,947.83
6. Step 6: Final answer
   x = 18,447.78