Finding the Fourth Proportional to 8,799.36, 12,142.78 and 5,023.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,799.36 : 12,142.78 = 5,023.72 : x
2. Step 2: Convert to fraction form
   8,799.36/12,142.78 = 5,023.72/x
3. Step 3: Cross multiply
   8,799.36x = 12,142.78 × 5,023.72
4. Step 4: Simplify right side
   8,799.36x = 61,001,926.74
5. Step 5: Solve for x
   x = 61,001,926.74/8,799.36
6. Step 6: Final answer
   x = 6,932.54