Finding the Fourth Proportional to 12,847.50, 17,732.41 and 7,810.66

Step by Step Solution

1. Step 1: Write the proportion equation
   12,847.50 : 17,732.41 = 7,810.66 : x
2. Step 2: Convert to fraction form
   12,847.50/17,732.41 = 7,810.66/x
3. Step 3: Cross multiply
   12,847.50x = 17,732.41 × 7,810.66
4. Step 4: Simplify right side
   12,847.50x = 138,501,825.49
5. Step 5: Solve for x
   x = 138,501,825.49/12,847.50
6. Step 6: Final answer
   x = 10,780.45