Finding the Fourth Proportional to 22,329.56, 30,820.34 and 12,903.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,329.56 : 30,820.34 = 12,903.56 : x
2. Step 2: Convert to fraction form
   22,329.56/30,820.34 = 12,903.56/x
3. Step 3: Cross multiply
   22,329.56x = 30,820.34 × 12,903.56
4. Step 4: Simplify right side
   22,329.56x = 397,692,106.41
5. Step 5: Solve for x
   x = 397,692,106.41/22,329.56
6. Step 6: Final answer
   x = 17,810.12