Finding the Fourth Proportional to 11,312.50, 15,620.42 and 7,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,312.50 : 15,620.42 = 7,068.50 : x
2. Step 2: Convert to fraction form
   11,312.50/15,620.42 = 7,068.50/x
3. Step 3: Cross multiply
   11,312.50x = 15,620.42 × 7,068.50
4. Step 4: Simplify right side
   11,312.50x = 110,412,903.43
5. Step 5: Solve for x
   x = 110,412,903.43/11,312.50
6. Step 6: Final answer
   x = 9,760.26