Finding the Fourth Proportional to 37,054.44, 51,134.64 and 21,139.20

Step by Step Solution

1. Step 1: Write the proportion equation
   37,054.44 : 51,134.64 = 21,139.20 : x
2. Step 2: Convert to fraction form
   37,054.44/51,134.64 = 21,139.20/x
3. Step 3: Cross multiply
   37,054.44x = 51,134.64 × 21,139.20
4. Step 4: Simplify right side
   37,054.44x = 1,080,945,381.89
5. Step 5: Solve for x
   x = 1,080,945,381.89/37,054.44
6. Step 6: Final answer
   x = 29,171.82