Finding the Fourth Proportional to 37,449.72, 51,680.61 and 21,537.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,449.72 : 51,680.61 = 21,537.30 : x
2. Step 2: Convert to fraction form
   37,449.72/51,680.61 = 21,537.30/x
3. Step 3: Cross multiply
   37,449.72x = 51,680.61 × 21,537.30
4. Step 4: Simplify right side
   37,449.72x = 1,113,060,801.75
5. Step 5: Solve for x
   x = 1,113,060,801.75/37,449.72
6. Step 6: Final answer
   x = 29,721.47