Finding the Fourth Proportional to 21,038.59, 29,034.50 and 12,085.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,038.59 : 29,034.50 = 12,085.86 : x
2. Step 2: Convert to fraction form
   21,038.59/29,034.50 = 12,085.86/x
3. Step 3: Cross multiply
   21,038.59x = 29,034.50 × 12,085.86
4. Step 4: Simplify right side
   21,038.59x = 350,906,902.17
5. Step 5: Solve for x
   x = 350,906,902.17/21,038.59
6. Step 6: Final answer
   x = 16,679.21