Finding the Fourth Proportional to 22,196.63, 30,632.78 and 12,764.99

Step by Step Solution

1. Step 1: Write the proportion equation
   22,196.63 : 30,632.78 = 12,764.99 : x
2. Step 2: Convert to fraction form
   22,196.63/30,632.78 = 12,764.99/x
3. Step 3: Cross multiply
   22,196.63x = 30,632.78 × 12,764.99
4. Step 4: Simplify right side
   22,196.63x = 391,027,130.37
5. Step 5: Solve for x
   x = 391,027,130.37/22,196.63
6. Step 6: Final answer
   x = 17,616.51