Finding the Fourth Proportional to 12,698.42, 19,042.29 and 4,799.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,698.42 : 19,042.29 = 4,799.60 : x
2. Step 2: Convert to fraction form
   12,698.42/19,042.29 = 4,799.60/x
3. Step 3: Cross multiply
   12,698.42x = 19,042.29 × 4,799.60
4. Step 4: Simplify right side
   12,698.42x = 91,395,458.39
5. Step 5: Solve for x
   x = 91,395,458.39/12,698.42
6. Step 6: Final answer
   x = 7,197.39