Finding the Fourth Proportional to 38,275.82, 52,819.72 and 21,279.28

Step by Step Solution

1. Step 1: Write the proportion equation
   38,275.82 : 52,819.72 = 21,279.28 : x
2. Step 2: Convert to fraction form
   38,275.82/52,819.72 = 21,279.28/x
3. Step 3: Cross multiply
   38,275.82x = 52,819.72 × 21,279.28
4. Step 4: Simplify right side
   38,275.82x = 1,123,965,611.40
5. Step 5: Solve for x
   x = 1,123,965,611.40/38,275.82
6. Step 6: Final answer
   x = 29,364.90