Finding the Fourth Proportional to 9,432.63, 13,026.47 and 7,770.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,432.63 : 13,026.47 = 7,770.51 : x
2. Step 2: Convert to fraction form
   9,432.63/13,026.47 = 7,770.51/x
3. Step 3: Cross multiply
   9,432.63x = 13,026.47 × 7,770.51
4. Step 4: Simplify right side
   9,432.63x = 101,222,276.55
5. Step 5: Solve for x
   x = 101,222,276.55/9,432.63
6. Step 6: Final answer
   x = 10,731.08