Finding the Fourth Proportional to 14,428.48, 19,897.50 and 8,764.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,428.48 : 19,897.50 = 8,764.15 : x
2. Step 2: Convert to fraction form
   14,428.48/19,897.50 = 8,764.15/x
3. Step 3: Cross multiply
   14,428.48x = 19,897.50 × 8,764.15
4. Step 4: Simplify right side
   14,428.48x = 174,384,674.63
5. Step 5: Solve for x
   x = 174,384,674.63/14,428.48
6. Step 6: Final answer
   x = 12,086.14