Finding the Fourth Proportional to 9,855.31, 14,763.51 and 7,392.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,855.31 : 14,763.51 = 7,392.91 : x
2. Step 2: Convert to fraction form
   9,855.31/14,763.51 = 7,392.91/x
3. Step 3: Cross multiply
   9,855.31x = 14,763.51 × 7,392.91
4. Step 4: Simplify right side
   9,855.31x = 109,145,300.71
5. Step 5: Solve for x
   x = 109,145,300.71/9,855.31
6. Step 6: Final answer
   x = 11,074.77