Finding the Fourth Proportional to 10,047.06, 13,864.58 and 5,570.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,047.06 : 13,864.58 = 5,570.90 : x
2. Step 2: Convert to fraction form
   10,047.06/13,864.58 = 5,570.90/x
3. Step 3: Cross multiply
   10,047.06x = 13,864.58 × 5,570.90
4. Step 4: Simplify right side
   10,047.06x = 77,238,091.54
5. Step 5: Solve for x
   x = 77,238,091.54/10,047.06
6. Step 6: Final answer
   x = 7,687.63