Finding the Fourth Proportional to 37,085.79, 51,176.43 and 21,171.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,085.79 : 51,176.43 = 21,171.72 : x
2. Step 2: Convert to fraction form
   37,085.79/51,176.43 = 21,171.72/x
3. Step 3: Cross multiply
   37,085.79x = 51,176.43 × 21,171.72
4. Step 4: Simplify right side
   37,085.79x = 1,083,493,046.56
5. Step 5: Solve for x
   x = 1,083,493,046.56/37,085.79
6. Step 6: Final answer
   x = 29,215.85