Finding the Fourth Proportional to 28,634.17, 42,955.30 and 8,914.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,634.17 : 42,955.30 = 8,914.72 : x
2. Step 2: Convert to fraction form
   28,634.17/42,955.30 = 8,914.72/x
3. Step 3: Cross multiply
   28,634.17x = 42,955.30 × 8,914.72
4. Step 4: Simplify right side
   28,634.17x = 382,934,472.02
5. Step 5: Solve for x
   x = 382,934,472.02/28,634.17
6. Step 6: Final answer
   x = 13,373.34