Finding the Fourth Proportional to 13,918.72, 19,207.04 and 7,950.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,918.72 : 19,207.04 = 7,950.72 : x
2. Step 2: Convert to fraction form
   13,918.72/19,207.04 = 7,950.72/x
3. Step 3: Cross multiply
   13,918.72x = 19,207.04 × 7,950.72
4. Step 4: Simplify right side
   13,918.72x = 152,709,797.07
5. Step 5: Solve for x
   x = 152,709,797.07/13,918.72
6. Step 6: Final answer
   x = 10,971.54