Finding the Fourth Proportional to 20,345.35, 30,522.69 and 7,865.48

Step by Step Solution

1. Step 1: Write the proportion equation
   20,345.35 : 30,522.69 = 7,865.48 : x
2. Step 2: Convert to fraction form
   20,345.35/30,522.69 = 7,865.48/x
3. Step 3: Cross multiply
   20,345.35x = 30,522.69 × 7,865.48
4. Step 4: Simplify right side
   20,345.35x = 240,075,607.74
5. Step 5: Solve for x
   x = 240,075,607.74/20,345.35
6. Step 6: Final answer
   x = 11,800.02