Finding the Fourth Proportional to 8,145.06, 12,216.16 and 3,762.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145.06 : 12,216.16 = 3,762.15 : x
2. Step 2: Convert to fraction form
   8,145.06/12,216.16 = 3,762.15/x
3. Step 3: Cross multiply
   8,145.06x = 12,216.16 × 3,762.15
4. Step 4: Simplify right side
   8,145.06x = 45,959,026.34
5. Step 5: Solve for x
   x = 45,959,026.34/8,145.06
6. Step 6: Final answer
   x = 5,642.56