Finding the Fourth Proportional to 22,699.52, 31,312.56 and 13,622.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,699.52 : 31,312.56 = 13,622.55 : x
2. Step 2: Convert to fraction form
   22,699.52/31,312.56 = 13,622.55/x
3. Step 3: Cross multiply
   22,699.52x = 31,312.56 × 13,622.55
4. Step 4: Simplify right side
   22,699.52x = 426,556,914.23
5. Step 5: Solve for x
   x = 426,556,914.23/22,699.52
6. Step 6: Final answer
   x = 18,791.45