Finding the Fourth Proportional to 19,782.72, 27,300.17 and 10,830.77

Step by Step Solution

1. Step 1: Write the proportion equation
   19,782.72 : 27,300.17 = 10,830.77 : x
2. Step 2: Convert to fraction form
   19,782.72/27,300.17 = 10,830.77/x
3. Step 3: Cross multiply
   19,782.72x = 27,300.17 × 10,830.77
4. Step 4: Simplify right side
   19,782.72x = 295,681,862.23
5. Step 5: Solve for x
   x = 295,681,862.23/19,782.72
6. Step 6: Final answer
   x = 14,946.47