Finding the Fourth Proportional to 22,596.56, 31,185.12 and 12,528.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,596.56 : 31,185.12 = 12,528.16 : x
2. Step 2: Convert to fraction form
   22,596.56/31,185.12 = 12,528.16/x
3. Step 3: Cross multiply
   22,596.56x = 31,185.12 × 12,528.16
4. Step 4: Simplify right side
   22,596.56x = 390,692,172.98
5. Step 5: Solve for x
   x = 390,692,172.98/22,596.56
6. Step 6: Final answer
   x = 17,289.90