Finding the Fourth Proportional to 11,219.31, 16,818.94 and 4,641.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,219.31 : 16,818.94 = 4,641.30 : x
2. Step 2: Convert to fraction form
   11,219.31/16,818.94 = 4,641.30/x
3. Step 3: Cross multiply
   11,219.31x = 16,818.94 × 4,641.30
4. Step 4: Simplify right side
   11,219.31x = 78,061,752.02
5. Step 5: Solve for x
   x = 78,061,752.02/11,219.31
6. Step 6: Final answer
   x = 6,957.80