Finding the Fourth Proportional to 16,892.21, 23,308.86 and 9,719.39

Step by Step Solution

1. Step 1: Write the proportion equation
   16,892.21 : 23,308.86 = 9,719.39 : x
2. Step 2: Convert to fraction form
   16,892.21/23,308.86 = 9,719.39/x
3. Step 3: Cross multiply
   16,892.21x = 23,308.86 × 9,719.39
4. Step 4: Simplify right side
   16,892.21x = 226,547,959.07
5. Step 5: Solve for x
   x = 226,547,959.07/16,892.21
6. Step 6: Final answer
   x = 13,411.39