Finding the Fourth Proportional to 22,437.39, 30,963.60 and 13,011.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,437.39 : 30,963.60 = 13,011.42 : x
2. Step 2: Convert to fraction form
   22,437.39/30,963.60 = 13,011.42/x
3. Step 3: Cross multiply
   22,437.39x = 30,963.60 × 13,011.42
4. Step 4: Simplify right side
   22,437.39x = 402,880,404.31
5. Step 5: Solve for x
   x = 402,880,404.31/22,437.39
6. Step 6: Final answer
   x = 17,955.76