Finding the Fourth Proportional to 9,830.35, 13,566.12 and 5,354.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,830.35 : 13,566.12 = 5,354.34 : x
2. Step 2: Convert to fraction form
   9,830.35/13,566.12 = 5,354.34/x
3. Step 3: Cross multiply
   9,830.35x = 13,566.12 × 5,354.34
4. Step 4: Simplify right side
   9,830.35x = 72,637,618.96
5. Step 5: Solve for x
   x = 72,637,618.96/9,830.35
6. Step 6: Final answer
   x = 7,389.12