Finding the Fourth Proportional to 23,780,872.18, 32,817,771.57 and 12,915,856.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,780,872.18 : 32,817,771.57 = 12,915,856.18 : x
2. Step 2: Convert to fraction form
   23,780,872.18/32,817,771.57 = 12,915,856.18/x
3. Step 3: Cross multiply
   23,780,872.18x = 32,817,771.57 × 12,915,856.18
4. Step 4: Simplify right side
   23,780,872.18x = 423,869,617,746,212.81
5. Step 5: Solve for x
   x = 423,869,617,746,212.81/23,780,872.18
6. Step 6: Final answer
   x = 17,823,972.75