Finding the Fourth Proportional to 10,065.21, 15,100.55 and 3,491.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.21 : 15,100.55 = 3,491.91 : x
2. Step 2: Convert to fraction form
   10,065.21/15,100.55 = 3,491.91/x
3. Step 3: Cross multiply
   10,065.21x = 15,100.55 × 3,491.91
4. Step 4: Simplify right side
   10,065.21x = 52,729,767.01
5. Step 5: Solve for x
   x = 52,729,767.01/10,065.21
6. Step 6: Final answer
   x = 5,238.81