Finding the Fourth Proportional to 28,061.08, 42,079.23 and 10,518.60

Step by Step Solution

1. Step 1: Write the proportion equation
   28,061.08 : 42,079.23 = 10,518.60 : x
2. Step 2: Convert to fraction form
   28,061.08/42,079.23 = 10,518.60/x
3. Step 3: Cross multiply
   28,061.08x = 42,079.23 × 10,518.60
4. Step 4: Simplify right side
   28,061.08x = 442,614,588.68
5. Step 5: Solve for x
   x = 442,614,588.68/28,061.08
6. Step 6: Final answer
   x = 15,773.26