Finding the Fourth Proportional to 37,057.72, 51,126.96 and 21,130.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,057.72 : 51,126.96 = 21,130.72 : x
2. Step 2: Convert to fraction form
   37,057.72/51,126.96 = 21,130.72/x
3. Step 3: Cross multiply
   37,057.72x = 51,126.96 × 21,130.72
4. Step 4: Simplify right side
   37,057.72x = 1,080,349,476.21
5. Step 5: Solve for x
   x = 1,080,349,476.21/37,057.72
6. Step 6: Final answer
   x = 29,153.16