Finding the Fourth Proportional to 13,222.27, 19,820.95 and 4,451.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,222.27 : 19,820.95 = 4,451.05 : x
2. Step 2: Convert to fraction form
   13,222.27/19,820.95 = 4,451.05/x
3. Step 3: Cross multiply
   13,222.27x = 19,820.95 × 4,451.05
4. Step 4: Simplify right side
   13,222.27x = 88,224,039.50
5. Step 5: Solve for x
   x = 88,224,039.50/13,222.27
6. Step 6: Final answer
   x = 6,672.38