Finding the Fourth Proportional to 37,215.42, 51,357.34 and 20,219.74

Step by Step Solution

1. Step 1: Write the proportion equation
   37,215.42 : 51,357.34 = 20,219.74 : x
2. Step 2: Convert to fraction form
   37,215.42/51,357.34 = 20,219.74/x
3. Step 3: Cross multiply
   37,215.42x = 51,357.34 × 20,219.74
4. Step 4: Simplify right side
   37,215.42x = 1,038,432,061.89
5. Step 5: Solve for x
   x = 1,038,432,061.89/37,215.42
6. Step 6: Final answer
   x = 27,903.27