Finding the Fourth Proportional to 12,640.50, 17,444.43 and 7,051.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,640.50 : 17,444.43 = 7,051.50 : x
2. Step 2: Convert to fraction form
   12,640.50/17,444.43 = 7,051.50/x
3. Step 3: Cross multiply
   12,640.50x = 17,444.43 × 7,051.50
4. Step 4: Simplify right side
   12,640.50x = 123,009,398.15
5. Step 5: Solve for x
   x = 123,009,398.15/12,640.50
6. Step 6: Final answer
   x = 9,731.37