Finding the Fourth Proportional to 16,485.31, 22,748.47 and 9,410.77

Step by Step Solution

1. Step 1: Write the proportion equation
   16,485.31 : 22,748.47 = 9,410.77 : x
2. Step 2: Convert to fraction form
   16,485.31/22,748.47 = 9,410.77/x
3. Step 3: Cross multiply
   16,485.31x = 22,748.47 × 9,410.77
4. Step 4: Simplify right side
   16,485.31x = 214,080,619.02
5. Step 5: Solve for x
   x = 214,080,619.02/16,485.31
6. Step 6: Final answer
   x = 12,986.14