Finding the Fourth Proportional to 28,410.18, 42,614.10 and 10,878.96

Step by Step Solution

1. Step 1: Write the proportion equation
   28,410.18 : 42,614.10 = 10,878.96 : x
2. Step 2: Convert to fraction form
   28,410.18/42,614.10 = 10,878.96/x
3. Step 3: Cross multiply
   28,410.18x = 42,614.10 × 10,878.96
4. Step 4: Simplify right side
   28,410.18x = 463,597,089.34
5. Step 5: Solve for x
   x = 463,597,089.34/28,410.18
6. Step 6: Final answer
   x = 16,317.99