Finding the Fourth Proportional to 12,762.12, 17,606.72 and 9,412.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,762.12 : 17,606.72 = 9,412.98 : x
2. Step 2: Convert to fraction form
   12,762.12/17,606.72 = 9,412.98/x
3. Step 3: Cross multiply
   12,762.12x = 17,606.72 × 9,412.98
4. Step 4: Simplify right side
   12,762.12x = 165,731,703.23
5. Step 5: Solve for x
   x = 165,731,703.23/12,762.12
6. Step 6: Final answer
   x = 12,986.22