Finding the Fourth Proportional to 34,429.92, 51,636.16 and 13,362.72

Step by Step Solution

1. Step 1: Write the proportion equation
   34,429.92 : 51,636.16 = 13,362.72 : x
2. Step 2: Convert to fraction form
   34,429.92/51,636.16 = 13,362.72/x
3. Step 3: Cross multiply
   34,429.92x = 51,636.16 × 13,362.72
4. Step 4: Simplify right side
   34,429.92x = 689,999,547.96
5. Step 5: Solve for x
   x = 689,999,547.96/34,429.92
6. Step 6: Final answer
   x = 20,040.70