Finding the Fourth Proportional to 9,521.16, 14,282.91 and 2,947.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.16 : 14,282.91 = 2,947.88 : x
2. Step 2: Convert to fraction form
   9,521.16/14,282.91 = 2,947.88/x
3. Step 3: Cross multiply
   9,521.16x = 14,282.91 × 2,947.88
4. Step 4: Simplify right side
   9,521.16x = 42,104,233.32
5. Step 5: Solve for x
   x = 42,104,233.32/9,521.16
6. Step 6: Final answer
   x = 4,422.17