Finding the Fourth Proportional to 10,071.63, 15,118.38 and 7,430.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,071.63 : 15,118.38 = 7,430.85 : x
2. Step 2: Convert to fraction form
   10,071.63/15,118.38 = 7,430.85/x
3. Step 3: Cross multiply
   10,071.63x = 15,118.38 × 7,430.85
4. Step 4: Simplify right side
   10,071.63x = 112,342,414.02
5. Step 5: Solve for x
   x = 112,342,414.02/10,071.63
6. Step 6: Final answer
   x = 11,154.34