Finding the Fourth Proportional to 11,538.40, 15,918.06 and 7,060.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,538.40 : 15,918.06 = 7,060.72 : x
2. Step 2: Convert to fraction form
   11,538.40/15,918.06 = 7,060.72/x
3. Step 3: Cross multiply
   11,538.40x = 15,918.06 × 7,060.72
4. Step 4: Simplify right side
   11,538.40x = 112,392,964.60
5. Step 5: Solve for x
   x = 112,392,964.60/11,538.40
6. Step 6: Final answer
   x = 9,740.78