Finding the Fourth Proportional to 12,167.56, 16,789.71 and 7,130.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,167.56 : 16,789.71 = 7,130.63 : x
2. Step 2: Convert to fraction form
   12,167.56/16,789.71 = 7,130.63/x
3. Step 3: Cross multiply
   12,167.56x = 16,789.71 × 7,130.63
4. Step 4: Simplify right side
   12,167.56x = 119,721,090.22
5. Step 5: Solve for x
   x = 119,721,090.22/12,167.56
6. Step 6: Final answer
   x = 9,839.37