Finding the Fourth Proportional to 9,803.68, 14,704.80 and 2,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,803.68 : 14,704.80 = 2,878.72 : x
2. Step 2: Convert to fraction form
   9,803.68/14,704.80 = 2,878.72/x
3. Step 3: Cross multiply
   9,803.68x = 14,704.80 × 2,878.72
4. Step 4: Simplify right side
   9,803.68x = 42,331,001.86
5. Step 5: Solve for x
   x = 42,331,001.86/9,803.68
6. Step 6: Final answer
   x = 4,317.87