Finding the Fourth Proportional to 28,298.25, 42,466.82 and 9,830.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,298.25 : 42,466.82 = 9,830.25 : x
2. Step 2: Convert to fraction form
   28,298.25/42,466.82 = 9,830.25/x
3. Step 3: Cross multiply
   28,298.25x = 42,466.82 × 9,830.25
4. Step 4: Simplify right side
   28,298.25x = 417,459,408.15
5. Step 5: Solve for x
   x = 417,459,408.15/28,298.25
6. Step 6: Final answer
   x = 14,752.13