Finding the Fourth Proportional to 10,499.16, 14,488.39 and 5,719.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.16 : 14,488.39 = 5,719.12 : x
2. Step 2: Convert to fraction form
   10,499.16/14,488.39 = 5,719.12/x
3. Step 3: Cross multiply
   10,499.16x = 14,488.39 × 5,719.12
4. Step 4: Simplify right side
   10,499.16x = 82,860,841.02
5. Step 5: Solve for x
   x = 82,860,841.02/10,499.16
6. Step 6: Final answer
   x = 7,892.14