Finding the Fourth Proportional to 10,159.72, 15,235.56 and 3,916.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,159.72 : 15,235.56 = 3,916.30 : x
2. Step 2: Convert to fraction form
   10,159.72/15,235.56 = 3,916.30/x
3. Step 3: Cross multiply
   10,159.72x = 15,235.56 × 3,916.30
4. Step 4: Simplify right side
   10,159.72x = 59,667,023.63
5. Step 5: Solve for x
   x = 59,667,023.63/10,159.72
6. Step 6: Final answer
   x = 5,872.90