Finding the Fourth Proportional to 13,068,887.94, 19,600,748.51 and 12,420,775.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,068,887.94 : 19,600,748.51 = 12,420,775.96 : x
2. Step 2: Convert to fraction form
   13,068,887.94/19,600,748.51 = 12,420,775.96/x
3. Step 3: Cross multiply
   13,068,887.94x = 19,600,748.51 × 12,420,775.96
4. Step 4: Simplify right side
   13,068,887.94x = 243,456,505,908,603.34
5. Step 5: Solve for x
   x = 243,456,505,908,603.34/13,068,887.94
6. Step 6: Final answer
   x = 18,628,708.66