Finding the Fourth Proportional to 12,640.88, 17,444.42 and 7,051.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,640.88 : 17,444.42 = 7,051.88 : x
2. Step 2: Convert to fraction form
   12,640.88/17,444.42 = 7,051.88/x
3. Step 3: Cross multiply
   12,640.88x = 17,444.42 × 7,051.88
4. Step 4: Simplify right side
   12,640.88x = 123,015,834.03
5. Step 5: Solve for x
   x = 123,015,834.03/12,640.88
6. Step 6: Final answer
   x = 9,731.59