Finding the Fourth Proportional to 12,998.42, 19,499.25 and 4,230.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,998.42 : 19,499.25 = 4,230.98 : x
2. Step 2: Convert to fraction form
   12,998.42/19,499.25 = 4,230.98/x
3. Step 3: Cross multiply
   12,998.42x = 19,499.25 × 4,230.98
4. Step 4: Simplify right side
   12,998.42x = 82,500,936.77
5. Step 5: Solve for x
   x = 82,500,936.77/12,998.42
6. Step 6: Final answer
   x = 6,347.00