Finding the Fourth Proportional to 34,081.76, 51,123.35 and 9,121.78

Step by Step Solution

1. Step 1: Write the proportion equation
   34,081.76 : 51,123.35 = 9,121.78 : x
2. Step 2: Convert to fraction form
   34,081.76/51,123.35 = 9,121.78/x
3. Step 3: Cross multiply
   34,081.76x = 51,123.35 × 9,121.78
4. Step 4: Simplify right side
   34,081.76x = 466,336,038.27
5. Step 5: Solve for x
   x = 466,336,038.27/34,081.76
6. Step 6: Final answer
   x = 13,682.86