Finding the Fourth Proportional to 28,650.88, 42,970.38 and 7,869.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,650.88 : 42,970.38 = 7,869.52 : x
2. Step 2: Convert to fraction form
   28,650.88/42,970.38 = 7,869.52/x
3. Step 3: Cross multiply
   28,650.88x = 42,970.38 × 7,869.52
4. Step 4: Simplify right side
   28,650.88x = 338,156,264.82
5. Step 5: Solve for x
   x = 338,156,264.82/28,650.88
6. Step 6: Final answer
   x = 11,802.65