Finding the Fourth Proportional to 13,242.24, 18,274.56 and 7,274.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,242.24 : 18,274.56 = 7,274.52 : x
2. Step 2: Convert to fraction form
   13,242.24/18,274.56 = 7,274.52/x
3. Step 3: Cross multiply
   13,242.24x = 18,274.56 × 7,274.52
4. Step 4: Simplify right side
   13,242.24x = 132,938,652.21
5. Step 5: Solve for x
   x = 132,938,652.21/13,242.24
6. Step 6: Final answer
   x = 10,038.99