Finding the Fourth Proportional to 37,788.72, 52,153.68 and 21,878.16

Step by Step Solution

1. Step 1: Write the proportion equation
   37,788.72 : 52,153.68 = 21,878.16 : x
2. Step 2: Convert to fraction form
   37,788.72/52,153.68 = 21,878.16/x
3. Step 3: Cross multiply
   37,788.72x = 52,153.68 × 21,878.16
4. Step 4: Simplify right side
   37,788.72x = 1,141,026,555.63
5. Step 5: Solve for x
   x = 1,141,026,555.63/37,788.72
6. Step 6: Final answer
   x = 30,194.90