Finding the Fourth Proportional to 11,445.54, 15,789.27 and 7,201.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,445.54 : 15,789.27 = 7,201.86 : x
2. Step 2: Convert to fraction form
   11,445.54/15,789.27 = 7,201.86/x
3. Step 3: Cross multiply
   11,445.54x = 15,789.27 × 7,201.86
4. Step 4: Simplify right side
   11,445.54x = 113,712,112.04
5. Step 5: Solve for x
   x = 113,712,112.04/11,445.54
6. Step 6: Final answer
   x = 9,935.06