Finding the Fourth Proportional to 12,665.60, 19,002.23 and 3,781.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.60 : 19,002.23 = 3,781.22 : x
2. Step 2: Convert to fraction form
   12,665.60/19,002.23 = 3,781.22/x
3. Step 3: Cross multiply
   12,665.60x = 19,002.23 × 3,781.22
4. Step 4: Simplify right side
   12,665.60x = 71,851,612.12
5. Step 5: Solve for x
   x = 71,851,612.12/12,665.60
6. Step 6: Final answer
   x = 5,672.97