Finding the Fourth Proportional to 48,429.89, 72,649.01 and 13,369.55

Step by Step Solution

1. Step 1: Write the proportion equation
   48,429.89 : 72,649.01 = 13,369.55 : x
2. Step 2: Convert to fraction form
   48,429.89/72,649.01 = 13,369.55/x
3. Step 3: Cross multiply
   48,429.89x = 72,649.01 × 13,369.55
4. Step 4: Simplify right side
   48,429.89x = 971,284,571.65
5. Step 5: Solve for x
   x = 971,284,571.65/48,429.89
6. Step 6: Final answer
   x = 20,055.48