Finding the Fourth Proportional to 37,403.30, 51,618.53 and 21,488.78

Step by Step Solution

1. Step 1: Write the proportion equation
   37,403.30 : 51,618.53 = 21,488.78 : x
2. Step 2: Convert to fraction form
   37,403.30/51,618.53 = 21,488.78/x
3. Step 3: Cross multiply
   37,403.30x = 51,618.53 × 21,488.78
4. Step 4: Simplify right side
   37,403.30x = 1,109,219,417.86
5. Step 5: Solve for x
   x = 1,109,219,417.86/37,403.30
6. Step 6: Final answer
   x = 29,655.65