Finding the Fourth Proportional to 37,218.21, 51,363.43 and 21,302.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,218.21 : 51,363.43 = 21,302.30 : x
2. Step 2: Convert to fraction form
   37,218.21/51,363.43 = 21,302.30/x
3. Step 3: Cross multiply
   37,218.21x = 51,363.43 × 21,302.30
4. Step 4: Simplify right side
   37,218.21x = 1,094,158,884.82
5. Step 5: Solve for x
   x = 1,094,158,884.82/37,218.21
6. Step 6: Final answer
   x = 29,398.48