Finding the Fourth Proportional to 14,488.50, 19,994.13 and 7,864.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,488.50 : 19,994.13 = 7,864.50 : x
2. Step 2: Convert to fraction form
   14,488.50/19,994.13 = 7,864.50/x
3. Step 3: Cross multiply
   14,488.50x = 19,994.13 × 7,864.50
4. Step 4: Simplify right side
   14,488.50x = 157,243,835.39
5. Step 5: Solve for x
   x = 157,243,835.39/14,488.50
6. Step 6: Final answer
   x = 10,853.01