Finding the Fourth Proportional to 11,929.31, 16,459.83 and 7,213.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,929.31 : 16,459.83 = 7,213.49 : x
2. Step 2: Convert to fraction form
   11,929.31/16,459.83 = 7,213.49/x
3. Step 3: Cross multiply
   11,929.31x = 16,459.83 × 7,213.49
4. Step 4: Simplify right side
   11,929.31x = 118,732,736.81
5. Step 5: Solve for x
   x = 118,732,736.81/11,929.31
6. Step 6: Final answer
   x = 9,953.03