Finding the Fourth Proportional to 48,622.07, 72,945.42 and 13,561.72

Step by Step Solution

1. Step 1: Write the proportion equation
   48,622.07 : 72,945.42 = 13,561.72 : x
2. Step 2: Convert to fraction form
   48,622.07/72,945.42 = 13,561.72/x
3. Step 3: Cross multiply
   48,622.07x = 72,945.42 × 13,561.72
4. Step 4: Simplify right side
   48,622.07x = 989,265,361.32
5. Step 5: Solve for x
   x = 989,265,361.32/48,622.07
6. Step 6: Final answer
   x = 20,346.01