Finding the Fourth Proportional to 37,782.72, 56,682.72 and 11,491.20

Step by Step Solution

1. Step 1: Write the proportion equation
   37,782.72 : 56,682.72 = 11,491.20 : x
2. Step 2: Convert to fraction form
   37,782.72/56,682.72 = 11,491.20/x
3. Step 3: Cross multiply
   37,782.72x = 56,682.72 × 11,491.20
4. Step 4: Simplify right side
   37,782.72x = 651,352,472.06
5. Step 5: Solve for x
   x = 651,352,472.06/37,782.72
6. Step 6: Final answer
   x = 17,239.43