Finding the Fourth Proportional to 22,152, 30,569.76 and 12,216

Step by Step Solution

1. Step 1: Write the proportion equation
   22,152 : 30,569.76 = 12,216 : x
2. Step 2: Convert to fraction form
   22,152/30,569.76 = 12,216/x
3. Step 3: Cross multiply
   22,152x = 30,569.76 × 12,216
4. Step 4: Simplify right side
   22,152x = 373,440,188.16
5. Step 5: Solve for x
   x = 373,440,188.16/22,152
6. Step 6: Final answer
   x = 16,858.08