Finding the Fourth Proportional to 19,948.76, 27,499.86 and 12,777.83

Step by Step Solution

1. Step 1: Write the proportion equation
   19,948.76 : 27,499.86 = 12,777.83 : x
2. Step 2: Convert to fraction form
   19,948.76/27,499.86 = 12,777.83/x
3. Step 3: Cross multiply
   19,948.76x = 27,499.86 × 12,777.83
4. Step 4: Simplify right side
   19,948.76x = 351,388,398.60
5. Step 5: Solve for x
   x = 351,388,398.60/19,948.76
6. Step 6: Final answer
   x = 17,614.55