Finding the Fourth Proportional to 22,205.56, 30,643.74 and 12,773.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,205.56 : 30,643.74 = 12,773.50 : x
2. Step 2: Convert to fraction form
   22,205.56/30,643.74 = 12,773.50/x
3. Step 3: Cross multiply
   22,205.56x = 30,643.74 × 12,773.50
4. Step 4: Simplify right side
   22,205.56x = 391,427,812.89
5. Step 5: Solve for x
   x = 391,427,812.89/22,205.56
6. Step 6: Final answer
   x = 17,627.47