Finding the Fourth Proportional to 13,516.30, 18,651.41 and 7,547.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,516.30 : 18,651.41 = 7,547.61 : x
2. Step 2: Convert to fraction form
   13,516.30/18,651.41 = 7,547.61/x
3. Step 3: Cross multiply
   13,516.30x = 18,651.41 × 7,547.61
4. Step 4: Simplify right side
   13,516.30x = 140,773,568.63
5. Step 5: Solve for x
   x = 140,773,568.63/13,516.30
6. Step 6: Final answer
   x = 10,415.10