Finding the Fourth Proportional to 9,019.34, 13,528.70 and 4,085.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.34 : 13,528.70 = 4,085.53 : x
2. Step 2: Convert to fraction form
   9,019.34/13,528.70 = 4,085.53/x
3. Step 3: Cross multiply
   9,019.34x = 13,528.70 × 4,085.53
4. Step 4: Simplify right side
   9,019.34x = 55,271,909.71
5. Step 5: Solve for x
   x = 55,271,909.71/9,019.34
6. Step 6: Final answer
   x = 6,128.15