Finding the Fourth Proportional to 12,973.48, 17,885.70 and 9,185.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,973.48 : 17,885.70 = 9,185.32 : x
2. Step 2: Convert to fraction form
   12,973.48/17,885.70 = 9,185.32/x
3. Step 3: Cross multiply
   12,973.48x = 17,885.70 × 9,185.32
4. Step 4: Simplify right side
   12,973.48x = 164,285,877.92
5. Step 5: Solve for x
   x = 164,285,877.92/12,973.48
6. Step 6: Final answer
   x = 12,663.21