Finding the Fourth Proportional to 9,654.86, 13,323.57 and 5,405.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,654.86 : 13,323.57 = 5,405.91 : x
2. Step 2: Convert to fraction form
   9,654.86/13,323.57 = 5,405.91/x
3. Step 3: Cross multiply
   9,654.86x = 13,323.57 × 5,405.91
4. Step 4: Simplify right side
   9,654.86x = 72,026,020.30
5. Step 5: Solve for x
   x = 72,026,020.30/9,654.86
6. Step 6: Final answer
   x = 7,460.08