Finding the Fourth Proportional to 12,870.94, 19,310.06 and 10,552.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.94 : 19,310.06 = 10,552.72 : x
2. Step 2: Convert to fraction form
   12,870.94/19,310.06 = 10,552.72/x
3. Step 3: Cross multiply
   12,870.94x = 19,310.06 × 10,552.72
4. Step 4: Simplify right side
   12,870.94x = 203,773,656.36
5. Step 5: Solve for x
   x = 203,773,656.36/12,870.94
6. Step 6: Final answer
   x = 15,832.07