Finding the Fourth Proportional to 37,775.83, 56,638.18 and 21,147.34

Step by Step Solution

1. Step 1: Write the proportion equation
   37,775.83 : 56,638.18 = 21,147.34 : x
2. Step 2: Convert to fraction form
   37,775.83/56,638.18 = 21,147.34/x
3. Step 3: Cross multiply
   37,775.83x = 56,638.18 × 21,147.34
4. Step 4: Simplify right side
   37,775.83x = 1,197,746,849.44
5. Step 5: Solve for x
   x = 1,197,746,849.44/37,775.83
6. Step 6: Final answer
   x = 31,706.70