Finding the Fourth Proportional to 22,600.56, 31,186.67 and 12,528.14

Step by Step Solution

1. Step 1: Write the proportion equation
   22,600.56 : 31,186.67 = 12,528.14 : x
2. Step 2: Convert to fraction form
   22,600.56/31,186.67 = 12,528.14/x
3. Step 3: Cross multiply
   22,600.56x = 31,186.67 × 12,528.14
4. Step 4: Simplify right side
   22,600.56x = 390,710,967.89
5. Step 5: Solve for x
   x = 390,710,967.89/22,600.56
6. Step 6: Final answer
   x = 17,287.67