Finding the Fourth Proportional to 10,210.58, 15,311.89 and 3,969.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,210.58 : 15,311.89 = 3,969.76 : x
2. Step 2: Convert to fraction form
   10,210.58/15,311.89 = 3,969.76/x
3. Step 3: Cross multiply
   10,210.58x = 15,311.89 × 3,969.76
4. Step 4: Simplify right side
   10,210.58x = 60,784,528.45
5. Step 5: Solve for x
   x = 60,784,528.45/10,210.58
6. Step 6: Final answer
   x = 5,953.10