Finding the Fourth Proportional to 13,000.83, 17,945.73 and 7,700.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,000.83 : 17,945.73 = 7,700.19 : x
2. Step 2: Convert to fraction form
   13,000.83/17,945.73 = 7,700.19/x
3. Step 3: Cross multiply
   13,000.83x = 17,945.73 × 7,700.19
4. Step 4: Simplify right side
   13,000.83x = 138,185,530.69
5. Step 5: Solve for x
   x = 138,185,530.69/13,000.83
6. Step 6: Final answer
   x = 10,628.98