Finding the Fourth Proportional to 10,894.63, 16,320.54 and 7,185.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,894.63 : 16,320.54 = 7,185.55 : x
2. Step 2: Convert to fraction form
   10,894.63/16,320.54 = 7,185.55/x
3. Step 3: Cross multiply
   10,894.63x = 16,320.54 × 7,185.55
4. Step 4: Simplify right side
   10,894.63x = 117,272,056.20
5. Step 5: Solve for x
   x = 117,272,056.20/10,894.63
6. Step 6: Final answer
   x = 10,764.21