Finding the Fourth Proportional to 34,766.40, 52,144.72 and 13,691.40

Step by Step Solution

1. Step 1: Write the proportion equation
   34,766.40 : 52,144.72 = 13,691.40 : x
2. Step 2: Convert to fraction form
   34,766.40/52,144.72 = 13,691.40/x
3. Step 3: Cross multiply
   34,766.40x = 52,144.72 × 13,691.40
4. Step 4: Simplify right side
   34,766.40x = 713,934,219.41
5. Step 5: Solve for x
   x = 713,934,219.41/34,766.40
6. Step 6: Final answer
   x = 20,535.18