Finding the Fourth Proportional to 19,978.99, 27,570.98 and 11,026.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,978.99 : 27,570.98 = 11,026.50 : x
2. Step 2: Convert to fraction form
   19,978.99/27,570.98 = 11,026.50/x
3. Step 3: Cross multiply
   19,978.99x = 27,570.98 × 11,026.50
4. Step 4: Simplify right side
   19,978.99x = 304,011,410.97
5. Step 5: Solve for x
   x = 304,011,410.97/19,978.99
6. Step 6: Final answer
   x = 15,216.56