Finding the Fourth Proportional to 34,358.72, 51,521.78 and 13,308.62

Step by Step Solution

1. Step 1: Write the proportion equation
   34,358.72 : 51,521.78 = 13,308.62 : x
2. Step 2: Convert to fraction form
   34,358.72/51,521.78 = 13,308.62/x
3. Step 3: Cross multiply
   34,358.72x = 51,521.78 × 13,308.62
4. Step 4: Simplify right side
   34,358.72x = 685,683,791.74
5. Step 5: Solve for x
   x = 685,683,791.74/34,358.72
6. Step 6: Final answer
   x = 19,956.62