Finding the Fourth Proportional to 13,069.72, 18,036.30 and 7,101.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,069.72 : 18,036.30 = 7,101.38 : x
2. Step 2: Convert to fraction form
   13,069.72/18,036.30 = 7,101.38/x
3. Step 3: Cross multiply
   13,069.72x = 18,036.30 × 7,101.38
4. Step 4: Simplify right side
   13,069.72x = 128,082,620.09
5. Step 5: Solve for x
   x = 128,082,620.09/13,069.72
6. Step 6: Final answer
   x = 9,799.96