Finding the Fourth Proportional to 9,780.57, 14,670.71 and 3,937.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,780.57 : 14,670.71 = 3,937.04 : x
2. Step 2: Convert to fraction form
   9,780.57/14,670.71 = 3,937.04/x
3. Step 3: Cross multiply
   9,780.57x = 14,670.71 × 3,937.04
4. Step 4: Simplify right side
   9,780.57x = 57,759,079.06
5. Step 5: Solve for x
   x = 57,759,079.06/9,780.57
6. Step 6: Final answer
   x = 5,905.49