Finding the Fourth Proportional to 12,765.51, 17,611.58 and 7,918.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,765.51 : 17,611.58 = 7,918.00 : x
2. Step 2: Convert to fraction form
   12,765.51/17,611.58 = 7,918.00/x
3. Step 3: Cross multiply
   12,765.51x = 17,611.58 × 7,918.00
4. Step 4: Simplify right side
   12,765.51x = 139,448,520.73
5. Step 5: Solve for x
   x = 139,448,520.73/12,765.51
6. Step 6: Final answer
   x = 10,923.85