Finding the Fourth Proportional to 9,288.06, 13,930.47 and 4,290.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,288.06 : 13,930.47 = 4,290.01 : x
2. Step 2: Convert to fraction form
   9,288.06/13,930.47 = 4,290.01/x
3. Step 3: Cross multiply
   9,288.06x = 13,930.47 × 4,290.01
4. Step 4: Simplify right side
   9,288.06x = 59,761,855.60
5. Step 5: Solve for x
   x = 59,761,855.60/9,288.06
6. Step 6: Final answer
   x = 6,434.27