Finding the Fourth Proportional to 21,386.59, 32,085.35 and 8,902.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,386.59 : 32,085.35 = 8,902.46 : x
2. Step 2: Convert to fraction form
   21,386.59/32,085.35 = 8,902.46/x
3. Step 3: Cross multiply
   21,386.59x = 32,085.35 × 8,902.46
4. Step 4: Simplify right side
   21,386.59x = 285,638,500.45
5. Step 5: Solve for x
   x = 285,638,500.45/21,386.59
6. Step 6: Final answer
   x = 13,355.97