Finding the Fourth Proportional to 12,563.58, 18,830.76 and 5,623.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,563.58 : 18,830.76 = 5,623.50 : x
2. Step 2: Convert to fraction form
   12,563.58/18,830.76 = 5,623.50/x
3. Step 3: Cross multiply
   12,563.58x = 18,830.76 × 5,623.50
4. Step 4: Simplify right side
   12,563.58x = 105,894,778.86
5. Step 5: Solve for x
   x = 105,894,778.86/12,563.58
6. Step 6: Final answer
   x = 8,428.71