Finding the Fourth Proportional to 8,827.00, 12,181.20 and 5,290.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,827.00 : 12,181.20 = 5,290.21 : x
2. Step 2: Convert to fraction form
   8,827.00/12,181.20 = 5,290.21/x
3. Step 3: Cross multiply
   8,827.00x = 12,181.20 × 5,290.21
4. Step 4: Simplify right side
   8,827.00x = 64,441,075.60
5. Step 5: Solve for x
   x = 64,441,075.60/8,827.00
6. Step 6: Final answer
   x = 7,300.45