Finding the Fourth Proportional to 21,362,105.60, 32,068,041.60 and 12,852,051.20

Step by Step Solution

1. Step 1: Write the proportion equation
   21,362,105.60 : 32,068,041.60 = 12,852,051.20 : x
2. Step 2: Convert to fraction form
   21,362,105.60/32,068,041.60 = 12,852,051.20/x
3. Step 3: Cross multiply
   21,362,105.60x = 32,068,041.60 × 12,852,051.20
4. Step 4: Simplify right side
   21,362,105.60x = 412,140,112,526,929.94
5. Step 5: Solve for x
   x = 412,140,112,526,929.94/21,362,105.60
6. Step 6: Final answer
   x = 19,293,047.24