Finding the Fourth Proportional to 12,995.96, 19,501.38 and 12,890.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,995.96 : 19,501.38 = 12,890.25 : x
2. Step 2: Convert to fraction form
   12,995.96/19,501.38 = 12,890.25/x
3. Step 3: Cross multiply
   12,995.96x = 19,501.38 × 12,890.25
4. Step 4: Simplify right side
   12,995.96x = 251,377,663.55
5. Step 5: Solve for x
   x = 251,377,663.55/12,995.96
6. Step 6: Final answer
   x = 19,342.76