Finding the Fourth Proportional to 9,882.08, 13,637.31 and 5,405.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,882.08 : 13,637.31 = 5,405.91 : x
2. Step 2: Convert to fraction form
   9,882.08/13,637.31 = 5,405.91/x
3. Step 3: Cross multiply
   9,882.08x = 13,637.31 × 5,405.91
4. Step 4: Simplify right side
   9,882.08x = 73,722,015.12
5. Step 5: Solve for x
   x = 73,722,015.12/9,882.08
6. Step 6: Final answer
   x = 7,460.17