Finding the Fourth Proportional to 10,667.78, 15,994.82 and 4,432.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,667.78 : 15,994.82 = 4,432.10 : x
2. Step 2: Convert to fraction form
   10,667.78/15,994.82 = 4,432.10/x
3. Step 3: Cross multiply
   10,667.78x = 15,994.82 × 4,432.10
4. Step 4: Simplify right side
   10,667.78x = 70,890,692.79
5. Step 5: Solve for x
   x = 70,890,692.79/10,667.78
6. Step 6: Final answer
   x = 6,645.31