Finding the Fourth Proportional to 12,090.78, 18,139.08 and 5,066.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,090.78 : 18,139.08 = 5,066.94 : x
2. Step 2: Convert to fraction form
   12,090.78/18,139.08 = 5,066.94/x
3. Step 3: Cross multiply
   12,090.78x = 18,139.08 × 5,066.94
4. Step 4: Simplify right side
   12,090.78x = 91,909,630.02
5. Step 5: Solve for x
   x = 91,909,630.02/12,090.78
6. Step 6: Final answer
   x = 7,601.63