Finding the Fourth Proportional to 28,598.52, 42,895.90 and 9,878.83

Step by Step Solution

1. Step 1: Write the proportion equation
   28,598.52 : 42,895.90 = 9,878.83 : x
2. Step 2: Convert to fraction form
   28,598.52/42,895.90 = 9,878.83/x
3. Step 3: Cross multiply
   28,598.52x = 42,895.90 × 9,878.83
4. Step 4: Simplify right side
   28,598.52x = 423,761,064.62
5. Step 5: Solve for x
   x = 423,761,064.62/28,598.52
6. Step 6: Final answer
   x = 14,817.59