Finding the Fourth Proportional to 13,978.66, 19,290.54 and 8,010.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978.66 : 19,290.54 = 8,010.04 : x
2. Step 2: Convert to fraction form
   13,978.66/19,290.54 = 8,010.04/x
3. Step 3: Cross multiply
   13,978.66x = 19,290.54 × 8,010.04
4. Step 4: Simplify right side
   13,978.66x = 154,517,997.02
5. Step 5: Solve for x
   x = 154,517,997.02/13,978.66
6. Step 6: Final answer
   x = 11,053.85