Finding the Fourth Proportional to 10,402,482.15, 15,603,723.23 and 9,142,770.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,402,482.15 : 15,603,723.23 = 9,142,770.15 : x
2. Step 2: Convert to fraction form
   10,402,482.15/15,603,723.23 = 9,142,770.15/x
3. Step 3: Cross multiply
   10,402,482.15x = 15,603,723.23 × 9,142,770.15
4. Step 4: Simplify right side
   10,402,482.15x = 142,661,254,976,105.59
5. Step 5: Solve for x
   x = 142,661,254,976,105.59/10,402,482.15
6. Step 6: Final answer
   x = 13,714,155.23