Finding the Fourth Proportional to 8,835.30, 13,250.52 and 2,991.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,835.30 : 13,250.52 = 2,991.06 : x
2. Step 2: Convert to fraction form
   8,835.30/13,250.52 = 2,991.06/x
3. Step 3: Cross multiply
   8,835.30x = 13,250.52 × 2,991.06
4. Step 4: Simplify right side
   8,835.30x = 39,633,100.35
5. Step 5: Solve for x
   x = 39,633,100.35/8,835.30
6. Step 6: Final answer
   x = 4,485.77