Finding the Fourth Proportional to 37,646.72, 51,957.72 and 21,730.88

Step by Step Solution

1. Step 1: Write the proportion equation
   37,646.72 : 51,957.72 = 21,730.88 : x
2. Step 2: Convert to fraction form
   37,646.72/51,957.72 = 21,730.88/x
3. Step 3: Cross multiply
   37,646.72x = 51,957.72 × 21,730.88
4. Step 4: Simplify right side
   37,646.72x = 1,129,086,978.39
5. Step 5: Solve for x
   x = 1,129,086,978.39/37,646.72
6. Step 6: Final answer
   x = 29,991.64