Finding the Fourth Proportional to 10,190.78, 14,068.55 and 7,917.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,190.78 : 14,068.55 = 7,917.04 : x
2. Step 2: Convert to fraction form
   10,190.78/14,068.55 = 7,917.04/x
3. Step 3: Cross multiply
   10,190.78x = 14,068.55 × 7,917.04
4. Step 4: Simplify right side
   10,190.78x = 111,381,310.47
5. Step 5: Solve for x
   x = 111,381,310.47/10,190.78
6. Step 6: Final answer
   x = 10,929.62