Finding the Fourth Proportional to 12,865,040.19, 17,747,054.24 and 10,420,411.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,865,040.19 : 17,747,054.24 = 10,420,411.59 : x
2. Step 2: Convert to fraction form
   12,865,040.19/17,747,054.24 = 10,420,411.59/x
3. Step 3: Cross multiply
   12,865,040.19x = 17,747,054.24 × 10,420,411.59
4. Step 4: Simplify right side
   12,865,040.19x = 184,931,609,638,752.56
5. Step 5: Solve for x
   x = 184,931,609,638,752.56/12,865,040.19
6. Step 6: Final answer
   x = 14,374,740.14