Finding the Fourth Proportional to 31,278.98, 46,925.83 and 9,091.71

Step by Step Solution

1. Step 1: Write the proportion equation
   31,278.98 : 46,925.83 = 9,091.71 : x
2. Step 2: Convert to fraction form
   31,278.98/46,925.83 = 9,091.71/x
3. Step 3: Cross multiply
   31,278.98x = 46,925.83 × 9,091.71
4. Step 4: Simplify right side
   31,278.98x = 426,636,049.23
5. Step 5: Solve for x
   x = 426,636,049.23/31,278.98
6. Step 6: Final answer
   x = 13,639.71