Finding the Fourth Proportional to 37,404.76, 51,618.54 and 21,490.20

Step by Step Solution

1. Step 1: Write the proportion equation
   37,404.76 : 51,618.54 = 21,490.20 : x
2. Step 2: Convert to fraction form
   37,404.76/51,618.54 = 21,490.20/x
3. Step 3: Cross multiply
   37,404.76x = 51,618.54 × 21,490.20
4. Step 4: Simplify right side
   37,404.76x = 1,109,292,748.31
5. Step 5: Solve for x
   x = 1,109,292,748.31/37,404.76
6. Step 6: Final answer
   x = 29,656.46