Finding the Fourth Proportional to 9,946.80, 13,726.06 and 5,470.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,946.80 : 13,726.06 = 5,470.74 : x
2. Step 2: Convert to fraction form
   9,946.80/13,726.06 = 5,470.74/x
3. Step 3: Cross multiply
   9,946.80x = 13,726.06 × 5,470.74
4. Step 4: Simplify right side
   9,946.80x = 75,091,691.81
5. Step 5: Solve for x
   x = 75,091,691.81/9,946.80
6. Step 6: Final answer
   x = 7,549.33