Finding the Fourth Proportional to 37,019.20, 51,086.04 and 21,103.12

Step by Step Solution

1. Step 1: Write the proportion equation
   37,019.20 : 51,086.04 = 21,103.12 : x
2. Step 2: Convert to fraction form
   37,019.20/51,086.04 = 21,103.12/x
3. Step 3: Cross multiply
   37,019.20x = 51,086.04 × 21,103.12
4. Step 4: Simplify right side
   37,019.20x = 1,078,074,832.44
5. Step 5: Solve for x
   x = 1,078,074,832.44/37,019.20
6. Step 6: Final answer
   x = 29,122.05