Finding the Fourth Proportional to 12,801.72, 17,666.70 and 7,059.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.72 : 17,666.70 = 7,059.36 : x
2. Step 2: Convert to fraction form
   12,801.72/17,666.70 = 7,059.36/x
3. Step 3: Cross multiply
   12,801.72x = 17,666.70 × 7,059.36
4. Step 4: Simplify right side
   12,801.72x = 124,715,595.31
5. Step 5: Solve for x
   x = 124,715,595.31/12,801.72
6. Step 6: Final answer
   x = 9,742.10