Finding the Fourth Proportional to 10,047.58, 13,836.42 and 9,405.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,047.58 : 13,836.42 = 9,405.77 : x
2. Step 2: Convert to fraction form
   10,047.58/13,836.42 = 9,405.77/x
3. Step 3: Cross multiply
   10,047.58x = 13,836.42 × 9,405.77
4. Step 4: Simplify right side
   10,047.58x = 130,142,114.96
5. Step 5: Solve for x
   x = 130,142,114.96/10,047.58
6. Step 6: Final answer
   x = 12,952.59