Finding the Fourth Proportional to 22,316.50, 30,796.77 and 12,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,316.50 : 30,796.77 = 12,380.50 : x
2. Step 2: Convert to fraction form
   22,316.50/30,796.77 = 12,380.50/x
3. Step 3: Cross multiply
   22,316.50x = 30,796.77 × 12,380.50
4. Step 4: Simplify right side
   22,316.50x = 381,279,410.99
5. Step 5: Solve for x
   x = 381,279,410.99/22,316.50
6. Step 6: Final answer
   x = 17,085.09