Finding the Fourth Proportional to 34,969.16, 52,458.96 and 12,478.09

Step by Step Solution

1. Step 1: Write the proportion equation
   34,969.16 : 52,458.96 = 12,478.09 : x
2. Step 2: Convert to fraction form
   34,969.16/52,458.96 = 12,478.09/x
3. Step 3: Cross multiply
   34,969.16x = 52,458.96 × 12,478.09
4. Step 4: Simplify right side
   34,969.16x = 654,587,527.42
5. Step 5: Solve for x
   x = 654,587,527.42/34,969.16
6. Step 6: Final answer
   x = 18,718.99