Finding the Fourth Proportional to 19,844.86, 29,759.78 and 7,994.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,844.86 : 29,759.78 = 7,994.61 : x
2. Step 2: Convert to fraction form
   19,844.86/29,759.78 = 7,994.61/x
3. Step 3: Cross multiply
   19,844.86x = 29,759.78 × 7,994.61
4. Step 4: Simplify right side
   19,844.86x = 237,917,748.59
5. Step 5: Solve for x
   x = 237,917,748.59/19,844.86
6. Step 6: Final answer
   x = 11,988.89