Finding the Fourth Proportional to 28,094.50, 42,144.18 and 7,318

Step by Step Solution

1. Step 1: Write the proportion equation
   28,094.50 : 42,144.18 = 7,318 : x
2. Step 2: Convert to fraction form
   28,094.50/42,144.18 = 7,318/x
3. Step 3: Cross multiply
   28,094.50x = 42,144.18 × 7,318
4. Step 4: Simplify right side
   28,094.50x = 308,411,109.24
5. Step 5: Solve for x
   x = 308,411,109.24/28,094.50
6. Step 6: Final answer
   x = 10,977.63