Finding the Fourth Proportional to 10,109.99, 15,154.72 and 3,868.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.99 : 15,154.72 = 3,868.40 : x
2. Step 2: Convert to fraction form
   10,109.99/15,154.72 = 3,868.40/x
3. Step 3: Cross multiply
   10,109.99x = 15,154.72 × 3,868.40
4. Step 4: Simplify right side
   10,109.99x = 58,624,518.85
5. Step 5: Solve for x
   x = 58,624,518.85/10,109.99
6. Step 6: Final answer
   x = 5,798.67