Finding the Fourth Proportional to 9,019.78, 13,530.08 and 2,779.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.78 : 13,530.08 = 2,779.34 : x
2. Step 2: Convert to fraction form
   9,019.78/13,530.08 = 2,779.34/x
3. Step 3: Cross multiply
   9,019.78x = 13,530.08 × 2,779.34
4. Step 4: Simplify right side
   9,019.78x = 37,604,692.55
5. Step 5: Solve for x
   x = 37,604,692.55/9,019.78
6. Step 6: Final answer
   x = 4,169.14