Finding the Fourth Proportional to 13,009.72, 17,955.84 and 7,704.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,009.72 : 17,955.84 = 7,704.76 : x
2. Step 2: Convert to fraction form
   13,009.72/17,955.84 = 7,704.76/x
3. Step 3: Cross multiply
   13,009.72x = 17,955.84 × 7,704.76
4. Step 4: Simplify right side
   13,009.72x = 138,345,437.80
5. Step 5: Solve for x
   x = 138,345,437.80/13,009.72
6. Step 6: Final answer
   x = 10,634.01