Finding the Fourth Proportional to 14,345.10, 21,511.17 and 5,111.34

Step by Step Solution

1. Step 1: Write the proportion equation
   14,345.10 : 21,511.17 = 5,111.34 : x
2. Step 2: Convert to fraction form
   14,345.10/21,511.17 = 5,111.34/x
3. Step 3: Cross multiply
   14,345.10x = 21,511.17 × 5,111.34
4. Step 4: Simplify right side
   14,345.10x = 109,950,903.67
5. Step 5: Solve for x
   x = 109,950,903.67/14,345.10
6. Step 6: Final answer
   x = 7,664.70