Finding the Fourth Proportional to 37,433.18, 51,662.20 and 21,518.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,433.18 : 51,662.20 = 21,518.30 : x
2. Step 2: Convert to fraction form
   37,433.18/51,662.20 = 21,518.30/x
3. Step 3: Cross multiply
   37,433.18x = 51,662.20 × 21,518.30
4. Step 4: Simplify right side
   37,433.18x = 1,111,682,406.15
5. Step 5: Solve for x
   x = 1,111,682,406.15/37,433.18
6. Step 6: Final answer
   x = 29,697.79