Finding the Fourth Proportional to 14,012.58, 21,004.69 and 9,085.35

Step by Step Solution

1. Step 1: Write the proportion equation
   14,012.58 : 21,004.69 = 9,085.35 : x
2. Step 2: Convert to fraction form
   14,012.58/21,004.69 = 9,085.35/x
3. Step 3: Cross multiply
   14,012.58x = 21,004.69 × 9,085.35
4. Step 4: Simplify right side
   14,012.58x = 190,834,960.29
5. Step 5: Solve for x
   x = 190,834,960.29/14,012.58
6. Step 6: Final answer
   x = 13,618.83