Finding the Fourth Proportional to 28,068.17, 42,109.43 and 8,346.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,068.17 : 42,109.43 = 8,346.69 : x
2. Step 2: Convert to fraction form
   28,068.17/42,109.43 = 8,346.69/x
3. Step 3: Cross multiply
   28,068.17x = 42,109.43 × 8,346.69
4. Step 4: Simplify right side
   28,068.17x = 351,474,316.55
5. Step 5: Solve for x
   x = 351,474,316.55/28,068.17
6. Step 6: Final answer
   x = 12,522.17