Finding the Fourth Proportional to 11,820.72, 17,719.72 and 4,799.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,820.72 : 17,719.72 = 4,799.10 : x
2. Step 2: Convert to fraction form
   11,820.72/17,719.72 = 4,799.10/x
3. Step 3: Cross multiply
   11,820.72x = 17,719.72 × 4,799.10
4. Step 4: Simplify right side
   11,820.72x = 85,038,708.25
5. Step 5: Solve for x
   x = 85,038,708.25/11,820.72
6. Step 6: Final answer
   x = 7,194.04