Finding the Fourth Proportional to 14,388.60, 19,855.89 and 8,100.84

Step by Step Solution

1. Step 1: Write the proportion equation
   14,388.60 : 19,855.89 = 8,100.84 : x
2. Step 2: Convert to fraction form
   14,388.60/19,855.89 = 8,100.84/x
3. Step 3: Cross multiply
   14,388.60x = 19,855.89 × 8,100.84
4. Step 4: Simplify right side
   14,388.60x = 160,849,387.95
5. Step 5: Solve for x
   x = 160,849,387.95/14,388.60
6. Step 6: Final answer
   x = 11,178.95