Finding the Fourth Proportional to 10,142.03, 13,994.37 and 5,665.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,142.03 : 13,994.37 = 5,665.55 : x
2. Step 2: Convert to fraction form
   10,142.03/13,994.37 = 5,665.55/x
3. Step 3: Cross multiply
   10,142.03x = 13,994.37 × 5,665.55
4. Step 4: Simplify right side
   10,142.03x = 79,285,802.95
5. Step 5: Solve for x
   x = 79,285,802.95/10,142.03
6. Step 6: Final answer
   x = 7,817.55