Finding the Fourth Proportional to 12,470.42, 18,708.69 and 3,705.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,470.42 : 18,708.69 = 3,705.35 : x
2. Step 2: Convert to fraction form
   12,470.42/18,708.69 = 3,705.35/x
3. Step 3: Cross multiply
   12,470.42x = 18,708.69 × 3,705.35
4. Step 4: Simplify right side
   12,470.42x = 69,322,150.95
5. Step 5: Solve for x
   x = 69,322,150.95/12,470.42
6. Step 6: Final answer
   x = 5,558.93