Finding the Fourth Proportional to 28,071.96, 42,102.18 and 10,541.40

Step by Step Solution

1. Step 1: Write the proportion equation
   28,071.96 : 42,102.18 = 10,541.40 : x
2. Step 2: Convert to fraction form
   28,071.96/42,102.18 = 10,541.40/x
3. Step 3: Cross multiply
   28,071.96x = 42,102.18 × 10,541.40
4. Step 4: Simplify right side
   28,071.96x = 443,815,920.25
5. Step 5: Solve for x
   x = 443,815,920.25/28,071.96
6. Step 6: Final answer
   x = 15,809.94