Finding the Fourth Proportional to 10,147.42, 14,003.40 and 5,671.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147.42 : 14,003.40 = 5,671.18 : x
2. Step 2: Convert to fraction form
   10,147.42/14,003.40 = 5,671.18/x
3. Step 3: Cross multiply
   10,147.42x = 14,003.40 × 5,671.18
4. Step 4: Simplify right side
   10,147.42x = 79,415,802.01
5. Step 5: Solve for x
   x = 79,415,802.01/10,147.42
6. Step 6: Final answer
   x = 7,826.21