Finding the Fourth Proportional to 13,802.70, 19,047.61 and 7,515.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,802.70 : 19,047.61 = 7,515.06 : x
2. Step 2: Convert to fraction form
   13,802.70/19,047.61 = 7,515.06/x
3. Step 3: Cross multiply
   13,802.70x = 19,047.61 × 7,515.06
4. Step 4: Simplify right side
   13,802.70x = 143,143,932.01
5. Step 5: Solve for x
   x = 143,143,932.01/13,802.70
6. Step 6: Final answer
   x = 10,370.72