Finding the Fourth Proportional to 12,920.16, 19,382.51 and 4,599.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,920.16 : 19,382.51 = 4,599.98 : x
2. Step 2: Convert to fraction form
   12,920.16/19,382.51 = 4,599.98/x
3. Step 3: Cross multiply
   12,920.16x = 19,382.51 × 4,599.98
4. Step 4: Simplify right side
   12,920.16x = 89,159,158.35
5. Step 5: Solve for x
   x = 89,159,158.35/12,920.16
6. Step 6: Final answer
   x = 6,900.78