Finding the Fourth Proportional to 48,641.58, 72,955.89 and 13,584.78

Step by Step Solution

1. Step 1: Write the proportion equation
   48,641.58 : 72,955.89 = 13,584.78 : x
2. Step 2: Convert to fraction form
   48,641.58/72,955.89 = 13,584.78/x
3. Step 3: Cross multiply
   48,641.58x = 72,955.89 × 13,584.78
4. Step 4: Simplify right side
   48,641.58x = 991,089,715.35
5. Step 5: Solve for x
   x = 991,089,715.35/48,641.58
6. Step 6: Final answer
   x = 20,375.36