Finding the Fourth Proportional to 28,346.05, 42,525.23 and 8,624.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,346.05 : 42,525.23 = 8,624.10 : x
2. Step 2: Convert to fraction form
   28,346.05/42,525.23 = 8,624.10/x
3. Step 3: Cross multiply
   28,346.05x = 42,525.23 × 8,624.10
4. Step 4: Simplify right side
   28,346.05x = 366,741,580.30
5. Step 5: Solve for x
   x = 366,741,580.30/28,346.05
6. Step 6: Final answer
   x = 12,938.01