Finding the Fourth Proportional to 13,017.04, 17,961.48 and 7,427.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,017.04 : 17,961.48 = 7,427.28 : x
2. Step 2: Convert to fraction form
   13,017.04/17,961.48 = 7,427.28/x
3. Step 3: Cross multiply
   13,017.04x = 17,961.48 × 7,427.28
4. Step 4: Simplify right side
   13,017.04x = 133,404,941.17
5. Step 5: Solve for x
   x = 133,404,941.17/13,017.04
6. Step 6: Final answer
   x = 10,248.49