Finding the Fourth Proportional to 9,917.31, 14,878.32 and 2,897.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,917.31 : 14,878.32 = 2,897.43 : x
2. Step 2: Convert to fraction form
   9,917.31/14,878.32 = 2,897.43/x
3. Step 3: Cross multiply
   9,917.31x = 14,878.32 × 2,897.43
4. Step 4: Simplify right side
   9,917.31x = 43,108,890.72
5. Step 5: Solve for x
   x = 43,108,890.72/9,917.31
6. Step 6: Final answer
   x = 4,346.83