Finding the Fourth Proportional to 13,994.71, 19,311.83 and 7,707.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,994.71 : 19,311.83 = 7,707.09 : x
2. Step 2: Convert to fraction form
   13,994.71/19,311.83 = 7,707.09/x
3. Step 3: Cross multiply
   13,994.71x = 19,311.83 × 7,707.09
4. Step 4: Simplify right side
   13,994.71x = 148,837,933.48
5. Step 5: Solve for x
   x = 148,837,933.48/13,994.71
6. Step 6: Final answer
   x = 10,635.30