Finding the Fourth Proportional to 9,818.40, 14,729.76 and 2,892.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,818.40 : 14,729.76 = 2,892.72 : x
2. Step 2: Convert to fraction form
   9,818.40/14,729.76 = 2,892.72/x
3. Step 3: Cross multiply
   9,818.40x = 14,729.76 × 2,892.72
4. Step 4: Simplify right side
   9,818.40x = 42,609,071.35
5. Step 5: Solve for x
   x = 42,609,071.35/9,818.40
6. Step 6: Final answer
   x = 4,339.72