Finding the Fourth Proportional to 11,477.47, 15,832.20 and 7,221.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,477.47 : 15,832.20 = 7,221.82 : x
2. Step 2: Convert to fraction form
   11,477.47/15,832.20 = 7,221.82/x
3. Step 3: Cross multiply
   11,477.47x = 15,832.20 × 7,221.82
4. Step 4: Simplify right side
   11,477.47x = 114,337,298.60
5. Step 5: Solve for x
   x = 114,337,298.60/11,477.47
6. Step 6: Final answer
   x = 9,961.89