Finding the Fourth Proportional to 17,385.82, 23,992.30 and 9,428.06

Step by Step Solution

1. Step 1: Write the proportion equation
   17,385.82 : 23,992.30 = 9,428.06 : x
2. Step 2: Convert to fraction form
   17,385.82/23,992.30 = 9,428.06/x
3. Step 3: Cross multiply
   17,385.82x = 23,992.30 × 9,428.06
4. Step 4: Simplify right side
   17,385.82x = 226,200,843.94
5. Step 5: Solve for x
   x = 226,200,843.94/17,385.82
6. Step 6: Final answer
   x = 13,010.65