Finding the Fourth Proportional to 13,920.58, 19,207.29 and 7,950.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,920.58 : 19,207.29 = 7,950.34 : x
2. Step 2: Convert to fraction form
   13,920.58/19,207.29 = 7,950.34/x
3. Step 3: Cross multiply
   13,920.58x = 19,207.29 × 7,950.34
4. Step 4: Simplify right side
   13,920.58x = 152,704,485.98
5. Step 5: Solve for x
   x = 152,704,485.98/13,920.58
6. Step 6: Final answer
   x = 10,969.69