Finding the Fourth Proportional to 10,065.86, 15,072.96 and 9,770.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.86 : 15,072.96 = 9,770.31 : x
2. Step 2: Convert to fraction form
   10,065.86/15,072.96 = 9,770.31/x
3. Step 3: Cross multiply
   10,065.86x = 15,072.96 × 9,770.31
4. Step 4: Simplify right side
   10,065.86x = 147,267,491.82
5. Step 5: Solve for x
   x = 147,267,491.82/10,065.86
6. Step 6: Final answer
   x = 14,630.39