Finding the Fourth Proportional to 22,085.48, 30,478.76 and 12,655.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,085.48 : 30,478.76 = 12,655.86 : x
2. Step 2: Convert to fraction form
   22,085.48/30,478.76 = 12,655.86/x
3. Step 3: Cross multiply
   22,085.48x = 30,478.76 × 12,655.86
4. Step 4: Simplify right side
   22,085.48x = 385,734,856.25
5. Step 5: Solve for x
   x = 385,734,856.25/22,085.48
6. Step 6: Final answer
   x = 17,465.54