Finding the Fourth Proportional to 7,930.10, 11,117.50 and 7,930.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,930.10 : 11,117.50 = 7,930.10 : x
2. Step 2: Convert to fraction form
   7,930.10/11,117.50 = 7,930.10/x
3. Step 3: Cross multiply
   7,930.10x = 11,117.50 × 7,930.10
4. Step 4: Simplify right side
   7,930.10x = 88,162,886.75
5. Step 5: Solve for x
   x = 88,162,886.75/7,930.10
6. Step 6: Final answer
   x = 11,117.50