Finding the Fourth Proportional to 28,496.34, 42,740.51 and 9,776.07

Step by Step Solution

1. Step 1: Write the proportion equation
   28,496.34 : 42,740.51 = 9,776.07 : x
2. Step 2: Convert to fraction form
   28,496.34/42,740.51 = 9,776.07/x
3. Step 3: Cross multiply
   28,496.34x = 42,740.51 × 9,776.07
4. Step 4: Simplify right side
   28,496.34x = 417,834,168.72
5. Step 5: Solve for x
   x = 417,834,168.72/28,496.34
6. Step 6: Final answer
   x = 14,662.73