Finding the Fourth Proportional to 37,947.18, 52,368.81 and 21,819.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,947.18 : 52,368.81 = 21,819.72 : x
2. Step 2: Convert to fraction form
   37,947.18/52,368.81 = 21,819.72/x
3. Step 3: Cross multiply
   37,947.18x = 52,368.81 × 21,819.72
4. Step 4: Simplify right side
   37,947.18x = 1,142,672,770.93
5. Step 5: Solve for x
   x = 1,142,672,770.93/37,947.18
6. Step 6: Final answer
   x = 30,112.19