Finding the Fourth Proportional to 13,298.58, 19,939.59 and 4,974.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,298.58 : 19,939.59 = 4,974.30 : x
2. Step 2: Convert to fraction form
   13,298.58/19,939.59 = 4,974.30/x
3. Step 3: Cross multiply
   13,298.58x = 19,939.59 × 4,974.30
4. Step 4: Simplify right side
   13,298.58x = 99,185,502.54
5. Step 5: Solve for x
   x = 99,185,502.54/13,298.58
6. Step 6: Final answer
   x = 7,458.35