Finding the Fourth Proportional to 33,007.81, 45,538.83 and 21,683.40

Step by Step Solution

1. Step 1: Write the proportion equation
   33,007.81 : 45,538.83 = 21,683.40 : x
2. Step 2: Convert to fraction form
   33,007.81/45,538.83 = 21,683.40/x
3. Step 3: Cross multiply
   33,007.81x = 45,538.83 × 21,683.40
4. Step 4: Simplify right side
   33,007.81x = 987,436,666.42
5. Step 5: Solve for x
   x = 987,436,666.42/33,007.81
6. Step 6: Final answer
   x = 29,915.24