Finding the Fourth Proportional to 22,081.72, 30,477.10 and 12,656.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,081.72 : 30,477.10 = 12,656.60 : x
2. Step 2: Convert to fraction form
   22,081.72/30,477.10 = 12,656.60/x
3. Step 3: Cross multiply
   22,081.72x = 30,477.10 × 12,656.60
4. Step 4: Simplify right side
   22,081.72x = 385,736,463.86
5. Step 5: Solve for x
   x = 385,736,463.86/22,081.72
6. Step 6: Final answer
   x = 17,468.59