Finding the Fourth Proportional to 9,881.37, 14,827.90 and 3,645.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,881.37 : 14,827.90 = 3,645.77 : x
2. Step 2: Convert to fraction form
   9,881.37/14,827.90 = 3,645.77/x
3. Step 3: Cross multiply
   9,881.37x = 14,827.90 × 3,645.77
4. Step 4: Simplify right side
   9,881.37x = 54,059,020.61
5. Step 5: Solve for x
   x = 54,059,020.61/9,881.37
6. Step 6: Final answer
   x = 5,470.80