Finding the Fourth Proportional to 21,777.76, 30,053.31 and 12,346.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,777.76 : 30,053.31 = 12,346.32 : x
2. Step 2: Convert to fraction form
   21,777.76/30,053.31 = 12,346.32/x
3. Step 3: Cross multiply
   21,777.76x = 30,053.31 × 12,346.32
4. Step 4: Simplify right side
   21,777.76x = 371,047,782.32
5. Step 5: Solve for x
   x = 371,047,782.32/21,777.76
6. Step 6: Final answer
   x = 17,037.92