Finding the Fourth Proportional to 13,005.32, 17,945.46 and 7,700.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,005.32 : 17,945.46 = 7,700.36 : x
2. Step 2: Convert to fraction form
   13,005.32/17,945.46 = 7,700.36/x
3. Step 3: Cross multiply
   13,005.32x = 17,945.46 × 7,700.36
4. Step 4: Simplify right side
   13,005.32x = 138,186,502.37
5. Step 5: Solve for x
   x = 138,186,502.37/13,005.32
6. Step 6: Final answer
   x = 10,625.38