Finding the Fourth Proportional to 13,001.08, 17,945.10 and 7,697.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,001.08 : 17,945.10 = 7,697.72 : x
2. Step 2: Convert to fraction form
   13,001.08/17,945.10 = 7,697.72/x
3. Step 3: Cross multiply
   13,001.08x = 17,945.10 × 7,697.72
4. Step 4: Simplify right side
   13,001.08x = 138,136,355.17
5. Step 5: Solve for x
   x = 138,136,355.17/13,001.08
6. Step 6: Final answer
   x = 10,624.99