Finding the Fourth Proportional to 28,298.84, 42,419.04 and 9,572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,298.84 : 42,419.04 = 9,572.72 : x
2. Step 2: Convert to fraction form
   28,298.84/42,419.04 = 9,572.72/x
3. Step 3: Cross multiply
   28,298.84x = 42,419.04 × 9,572.72
4. Step 4: Simplify right side
   28,298.84x = 406,065,592.59
5. Step 5: Solve for x
   x = 406,065,592.59/28,298.84
6. Step 6: Final answer
   x = 14,349.20