Finding the Fourth Proportional to 22,632.89, 31,211.69 and 13,556.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,632.89 : 31,211.69 = 13,556.80 : x
2. Step 2: Convert to fraction form
   22,632.89/31,211.69 = 13,556.80/x
3. Step 3: Cross multiply
   22,632.89x = 31,211.69 × 13,556.80
4. Step 4: Simplify right side
   22,632.89x = 423,130,544.02
5. Step 5: Solve for x
   x = 423,130,544.02/22,632.89
6. Step 6: Final answer
   x = 18,695.38