Finding the Fourth Proportional to 22,769.58, 34,169.72 and 7,978.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,769.58 : 34,169.72 = 7,978.63 : x
2. Step 2: Convert to fraction form
   22,769.58/34,169.72 = 7,978.63/x
3. Step 3: Cross multiply
   22,769.58x = 34,169.72 × 7,978.63
4. Step 4: Simplify right side
   22,769.58x = 272,627,553.08
5. Step 5: Solve for x
   x = 272,627,553.08/22,769.58
6. Step 6: Final answer
   x = 11,973.32