Finding the Fourth Proportional to 9,859.57, 14,780.72 and 3,707.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.57 : 14,780.72 = 3,707.89 : x
2. Step 2: Convert to fraction form
   9,859.57/14,780.72 = 3,707.89/x
3. Step 3: Cross multiply
   9,859.57x = 14,780.72 × 3,707.89
4. Step 4: Simplify right side
   9,859.57x = 54,805,265.34
5. Step 5: Solve for x
   x = 54,805,265.34/9,859.57
6. Step 6: Final answer
   x = 5,558.59