Finding the Fourth Proportional to 48,054.72, 72,085.72 and 12,993.86

Step by Step Solution

1. Step 1: Write the proportion equation
   48,054.72 : 72,085.72 = 12,993.86 : x
2. Step 2: Convert to fraction form
   48,054.72/72,085.72 = 12,993.86/x
3. Step 3: Cross multiply
   48,054.72x = 72,085.72 × 12,993.86
4. Step 4: Simplify right side
   48,054.72x = 936,671,753.68
5. Step 5: Solve for x
   x = 936,671,753.68/48,054.72
6. Step 6: Final answer
   x = 19,491.77