Finding the Fourth Proportional to 12,385.48, 17,091.82 and 7,007.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.48 : 17,091.82 = 7,007.85 : x
2. Step 2: Convert to fraction form
   12,385.48/17,091.82 = 7,007.85/x
3. Step 3: Cross multiply
   12,385.48x = 17,091.82 × 7,007.85
4. Step 4: Simplify right side
   12,385.48x = 119,777,001.51
5. Step 5: Solve for x
   x = 119,777,001.51/12,385.48
6. Step 6: Final answer
   x = 9,670.76