Finding the Fourth Proportional to 13,090.96, 18,066.73 and 7,427.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,090.96 : 18,066.73 = 7,427.55 : x
2. Step 2: Convert to fraction form
   13,090.96/18,066.73 = 7,427.55/x
3. Step 3: Cross multiply
   13,090.96x = 18,066.73 × 7,427.55
4. Step 4: Simplify right side
   13,090.96x = 134,191,503.27
5. Step 5: Solve for x
   x = 134,191,503.27/13,090.96
6. Step 6: Final answer
   x = 10,250.70