Finding the Fourth Proportional to 12,897.72, 17,798.22 and 7,308.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,897.72 : 17,798.22 = 7,308.60 : x
2. Step 2: Convert to fraction form
   12,897.72/17,798.22 = 7,308.60/x
3. Step 3: Cross multiply
   12,897.72x = 17,798.22 × 7,308.60
4. Step 4: Simplify right side
   12,897.72x = 130,080,070.69
5. Step 5: Solve for x
   x = 130,080,070.69/12,897.72
6. Step 6: Final answer
   x = 10,085.51