Finding the Fourth Proportional to 10,742.02, 16,109.18 and 3,720.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,742.02 : 16,109.18 = 3,720.15 : x
2. Step 2: Convert to fraction form
   10,742.02/16,109.18 = 3,720.15/x
3. Step 3: Cross multiply
   10,742.02x = 16,109.18 × 3,720.15
4. Step 4: Simplify right side
   10,742.02x = 59,928,575.28
5. Step 5: Solve for x
   x = 59,928,575.28/10,742.02
6. Step 6: Final answer
   x = 5,578.89