Finding the Fourth Proportional to 22,072.50, 30,460.05 and 12,641.67

Step by Step Solution

1. Step 1: Write the proportion equation
   22,072.50 : 30,460.05 = 12,641.67 : x
2. Step 2: Convert to fraction form
   22,072.50/30,460.05 = 12,641.67/x
3. Step 3: Cross multiply
   22,072.50x = 30,460.05 × 12,641.67
4. Step 4: Simplify right side
   22,072.50x = 385,065,900.28
5. Step 5: Solve for x
   x = 385,065,900.28/22,072.50
6. Step 6: Final answer
   x = 17,445.50